CSS3绘制8种超炫的加载动画

朱雀 2022-08-21 06:36 328阅读 0赞

**CSS3绘制8种超炫的加载动画**

逛前端开发网站的时候，偶尔发现一组非常炫酷的CSS3加载动画，遂迫不及待的做个Demo保存下来。

这些加载动画用到了CSS3的旋转transform属性，颜色透明度设置和伪元素操作等CSS技术。奇妙的组合，产生了意想不到的效果。

**1.上下起伏波动的加载动画：**

![SouthEast][]

#loader1,
      #loader1:before,
      #loader1:after {
         background: #f2fa08;
         -webkit-animation: load1 1s infinite ease-in-out;
         animation: load1 1s infinite ease-in-out;
         width: 1em;
         height: 4em;
       }
       #loader1:before,
       #loader1:after {
         position: absolute;
         top: 0;
         content: '';
       }
       #loader1:before {
         left: -1.5em;
       }
       #loader1 {
         text-indent: -9999em;
         margin: 50px 50px;
         position: relative;
         float: left;
         font-size: 11px;
         -webkit-animation-delay: 0.16s;
         animation-delay: 0.16s;
       }
       #loader1:after {
         left: 1.5em;
         -webkit-animation-delay: 0.32s;
         animation-delay: 0.32s;
       }
       @-webkit-keyframes load1 {
         0%,
         80%,
         100% {
           box-shadow: 0 0 #f2fa08;
           height: 4em;
         }
         40% {
           box-shadow: 0 -2em #f2fa08;
           height: 5em;
         }
       }
       @keyframes load1 {
         0%,
         80%,
         100% {
           box-shadow: 0 0 #f2ff08;
           height: 4em;
         }
         40% {
           box-shadow: 0 -2em #f2ff08;
           height: 5em;
         }
       }

**2.类似弹簧效果的旋转加载动画：**

此处用到CSS3的transform属性。

CSS3的变形（transform）属性让元素在一个坐标系统中变形。这个属性包含一系列变形函数，可以移动、旋转和缩放元素。  
transform属性可用于内联元素和块元素。其默认值为none，表示不元素不进行变形。transform另一个属性值是一系列的<transform-function>。<transform-function>表示一个或多个变形函数，以空格分开；我们可以同时对一个元素进行变形的多种属性操作，如rotate、scale、translate等。以往我们叠加效果都是用逗号(“，”)隔开，但在transform中使用多个transform-function时却需要有空格隔开。  
 ● **2D transform常用的transform-function的功能:**  
transform属性3D变形（3D transform）模块的一部分，也就是说所有的2D变形函数也包含于3D变形规范中。如此一来，CSS3变形中的函数根据不同的规范略有不同，下面列出的是变形中的2D和3D常用变形函数的功能，简单说明如下：

translate()：用来移动元素，可以根据X轴和Ｙ轴坐标重新定位元素位置。在此基础上有两个扩展函数：translateX()和translateY()。

scale()：用来缩小或放大元素，可以使用元素尺寸发生变化。在此基础上有两个扩展函数：scaleX()和scaleY()。 rotate()：用来旋转元素。

skew()：用来让元素倾斜。在此基础上有两个扩展函数：skewX()和skewY()。

matrix()：定义矩阵变形，基于X轴和Y轴坐标重新定位元素位置。  
 ● **3D transform常用的transform-function的功能:**  
translate3d()：移元素元素，用来指定一个3D变形移动位移量。  
translate()：指定3Ｄ位移在Ｚ轴的位移量。  
scale3d()：用来缩放一个元素。  
scaleZ():指定Z轴的缩放向量。  
rotate3d()：指定元素具有一个三维旋转的角度。  
rotateX()、rotateY()和rotateZ()：让元素具有一个旋转角度。  
perspective()：指定一个透视投影矩阵。  
matrix3d()：定义矩阵变形。

● **transform-origin**属性用来设置变换的原点。示例中代表旋转中心。

![SouthEast 1][]

#loader2,
       #loader2:before,
       #loader2:after {
         border-radius: 50%;
       }
       #loader2:before,
       #loader2:after {
          position: absolute;
          content: '';
       }
       #loader2:before {
         width: 5.2em;
         height: 10.2em;
         background: #ffffff;
         border-radius: 10.2em 0 0 10.2em;
         top: -0.1em;
         left: -0.1em;
         -webkit-transform-origin: 5.2em 5.1em;
         transform-origin: 5.2em 5.1em;
         -webkit-animation: load2 2s infinite ease 1.5s;
         animation: load2 2s infinite ease 1.5s;
        }
        #loader2 {
          font-size: 11px;
          text-indent: -99999em;
          margin: 20px 20px;
          position: relative;
          float: left;
          width: 10em;
          height: 10em;
          box-shadow: inset 0 0 0 1em #ff0f88;
        }
        #loader2:after {
          width: 5.2em;
          height: 10.2em;
          background: #ffffff;
          border-radius: 0 10.2em 10.2em 0;
          top: -0.1em;
          left: 5.1em;
          -webkit-transform-origin: 0px 5.1em;
          transform-origin: 0px 5.1em;
          -webkit-animation: load2 2s infinite ease;
          animation: load2 2s infinite ease;
         }
         @-webkit-keyframes load2 {
            0% {
              -webkit-transform: rotate(0deg);
              transform: rotate(0deg);
            }
            100% {
              -webkit-transform: rotate(360deg);
              transform: rotate(360deg);
            }
        }
        @keyframes load2 {
           0% {
             -webkit-transform: rotate(0deg);
             transform: rotate(0deg);
           }
           100% {
             -webkit-transform: rotate(360deg);
             transform: rotate(360deg);
           }
       }

**3.大小不一的粒子旋转加载动画：**

![SouthEast 2][]

#load3,
      #loader3 {
       font-size: 20px;
       margin: 80px 50px;
       float: left;
       width: 1em;
       height: 1em;
       border-radius: 50%;
       position: relative;
       text-indent: -9999em;
       -webkit-animation: load3 1.3s infinite linear;
       animation: load3 1.3s infinite linear;
      }
      @-webkit-keyframes load3 {
         0%,
         100% {
           box-shadow: 0em -3em 0 0.2em #aaff00, 2em -2em 0 0em #aaff00,
                       3em 0 0 -0.5em #aaff00, 2em 2em 0 -0.5em #aaff00,
                       0em 3em 0 -0.5em #aaff00, -2em 2em 0 -0.5em #aaff00,
                       -3em 0 0 -0.5em #aaff00, -2em -2em 0 0em #aaff00;
         }
         12.5% {
           box-shadow: 0 -3em 0 0 #aaff00, 2em -2em 0 0.2em #aaff00,
                       3em 0 0 0 #aaff00, 2em 2em 0 -0.5em #aaff00,
                       0 3em 0 -0.5em #aaff00, -2em 2em 0 -0.5em #aaff00,
                       -3em 0 0 -0.5em #aaff00, -2em -2em 0 -0.5em #aaff00;
         }
         25% {
            box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 0em #aaff00,
                        3em 0 0 0.2em #aaff00, 2em 2em 0 0 #aaff00,
                        0 3em 0 -0.5em #aaff00, -2em 2em 0 -0.5em #aaff00,
                        -3em 0 0 -0.5em #aaff00, -2em -2em 0 -0.5em #aaff00;
         }
         37.5% {
             box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 -0.5em #aaff00,
                         3em 0 0 0 #aaff00, 2em 2em 0 0.2em #aaff00,
                         0 3em 0 0 #aaff00, -2em 2em 0 -0.5em #aaff00,
                         -3em 0 0 -0.5em #aaff00, -2em -2em 0 -0.5em #aaff00;
        }
        50% {
            box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 -0.5em #aaff00,
                        3em 0 0 -0.5em #aaff00, 2em 2em 0 0 #aaff00,
                        0 3em 0 0.2em #aaff00, -2em 2em 0 0 #aaff00,
                        -3em 0 0 -0.5em #aaff00, -2em -2em 0 -0.5em #aaff00;
        }
        62.5% {
            box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 -0.5em #aaff00,
                        3em 0 0 -0.5em #aaff00, 2em 2em 0 -0.5em #aaff00,
                        0 3em 0 0 #aaff00, -2em 2em 0 0.2em #aaff00,
                        -3em 0 0 0 #aaff00, -2em -2em 0 -0.5em #aaff00;
        }
        75% {
           box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 -0.5em #aaff00,
                       3em 0 0 -0.5em #aaff00, 2em 2em 0 -0.5em #aaff00,
                       0 3em 0 -0.5em #aaff00, -2em 2em 0 0 #aaff00,
                       -3em 0 0 0.2em #aaff00, -2em -2em 0 0 #aaff00;
        }
        87.5% {
           box-shadow: 0 -3em 0 0 #aaff00, 2em -2em 0 -0.5em #aaff00,
                       3em 0 0 -0.5em #aaff00, 2em 2em 0 -0.5em #aaff00,
                       0 3em 0 -0.5em #aaff00, -2em 2em 0 0 #aaff00,
                       -3em 0 0 0 #aaff00, -2em -2em 0 0.2em #aaff00;
        }
      }
      @keyframes load3 {
        0%,
        100% {
            box-shadow: 0 -3em 0 0.2em #aaff00, 2em -2em 0 0 #aaff00,
                        3em 0 0 -0.5em #aaff00, 2em 2em 0 -0.5em #aaff00,
                        0 3em 0 -0.5em #aaff00, -2em 2em 0 -0.5em #aaff00,
                        -3em 0 0 -0.5em #aaff00, -2em -2em 0 0 #aaff00;
        }
        12.5% {
            box-shadow: 0 -3em 0 0 #aaff00, 2em -2em 0 0.2em #aaff00,
                        3em 0 0 0 #aaff00, 2em 2em 0 -0.5em #aaff00,
                        0 3em 0 -0.5em #aaff00, -2em 2em 0 -0.5em #aaff00,
                        -3em 0 0 -0.5em #aaff00, -2em -2em 0 -0.5em #aaff00;
        }
        25% {
            box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 0 #aaff00,
                        3em 0 0 0.2em #aaff00, 2em 2em 0 0 #aaff00,
                        0 3em 0 -0.5em #aaff00, -2em 2em 0 -0.5em #aaff00,
                        -3em 0 0 -0.5em #aaff00, -2em -2em 0 -0.5em #aaff00;
        }
        37.5% {
           box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 -0.5em #aaff00,
                       3em 0 0 0 #aaff00, 2em 2em 0 0.2em #aaff00,
                       0 3em 0 0 #aaff00, -2em 2em 0 -0.5em #aaff00,
                       -3em 0 0 -0.5em #aaff00, -2em -2em 0 -0.5em #aaff00;
         }
         50% {
            box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 -0.5em #aaff00,
                        3em 0 0 -0.5em #aaff00, 2em 2em 0 0 #aaff00,
                        0 3em 0 0.2em #aaff00, -2em 2em 0 0 #aaff00,
                        -3em 0 0 -0.5em #aaff00, -2em -2em 0 -0.5em #aaff00;
         }
         62.5% {
             box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 -0.5em #aaff00,
                         3em 0 0 -0.5em #aaff00, 2em 2em 0 -0.5em #aaff00,
                         0 3em 0 0 #aaff00, -2em 2em 0 0.2em #aaff00,
                         -3em 0 0 0 #aaff00, -2em -2em 0 -0.5em #aaff00;
        }
        75% {
            box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 -0.5em #aaff00,
                        3em 0 0 -0.5em #aaff00, 2em 2em 0 -0.5em #aaff00,
                        0 3em 0 -0.5em #aaff00, -2em 2em 0 0 #aaff00,
                        -3em 0 0 0.2em #aaff00, -2em -2em 0 0 #aaff00;
         }
         87.5% {
             box-shadow: 0 -3em 0 0 #aaff00, 2em -2em 0 -0.5em #aaff00,
                         3em 0 0 -0.5em #aaff00, 2em 2em 0 -0.5em #aaff00,
                         0 3em 0 -0.5em #aaff00, -2em 2em 0 0 #aaff00,
                         -3em 0 0 0 #aaff00, -2em -2em 0 0.2em #aaff00;
        }
      }

4.蛇形旋转加载动画：

![SouthEast 3][]

#loader4 {
        font-size: 10px;
        margin: 20px 20px;
        float: left;
        text-indent: -9999em;
        width: 11em;
        height: 11em;
        border-radius: 50%;
        background: #ffffff;
        background: -moz-linear-gradient(left, #ff00ff 10%, rgba(255, 255, 255, 0) 42%);
        background: -webkit-linear-gradient(left, #ff00ff 10%, rgba(255, 255, 255, 0) 42%);
        background: -o-linear-gradient(left, #ff00ff 10%, rgba(255, 255, 255, 0) 42%);
        background: -ms-linear-gradient(left, #ff00ff 10%, rgba(255, 255, 255, 0) 42%);
        background: linear-gradient(to right, #ff00ff 10%, rgba(255, 255, 255, 0) 42%);
        position: relative;
        -webkit-animation: load4 1.4s infinite linear;
        animation: load4 1.4s infinite linear;
      }
      #loader4:before {
        width: 50%;
        height: 50%;
        background: #ff00ff;
        border-radius: 100% 0 0 0;
        position: absolute;
        top: 0;
        left: 0;
        content: '';
      }
      #loader4:after {
        background: #ffffff;
        width: 75%;
        height: 75%;
        border-radius: 50%;
        content: '';
        margin: auto;
        position: absolute;
        top: 0;
        left: 0;
        bottom: 0;
        right: 0;
      }
      @-webkit-keyframes load4 {
        0% {
          -webkit-transform: rotate(0deg);
          transform: rotate(0deg);
        }
        100% {
          -webkit-transform: rotate(360deg);
          transform: rotate(360deg);
        }
      }
      @keyframes load4 {
        0% {
          -webkit-transform: rotate(0deg);
          transform: rotate(0deg);
        }
        100% {
          -webkit-transform: rotate(360deg);
          transform: rotate(360deg);
        }
      }

**5.大小相同，颜色深浅不一的粒子旋转动画：**

它是运用CSS3的border-radius圆角属性、box-shadow阴影属性等属性制作出来的。

animation属性设置的参数：

● 设置对象所应用的动画名称：load5。

● 设置对象动画的持续时间：1.1s。

● 设置对象动画的过渡类型：

ease：动画以低速开始，然后加快，在结束前变慢。

linear：匀速。

ease-in：动画以低速开始。

ease-out：动画以低速结束。

ease-in-out：动画以低速开始和结束，相对于ease缓慢，速度更均匀。

step-start：按keyframes设置逐帧显示，第一帧为keyframes设置的第一帧。

step-end：按keyframes设置逐帧显示，第一帧为样式的初始值。

steps(<number>\[, \[ start | end \] \]?)：把keyframes里设置的一帧等分为几帧，start为第一次显示第一帧，end第一次显示样式的初始值，例如：steps(4,start)。

cubic-bezier(<number>, <number>, <number>, <number>)：在 cubic-bezier 函数中自己的值。可能的值是从 0 到 1 的数值。贝兹曲线限制了首尾两控制点的位置，通过调整中间两控制点的位置可以灵活得到常用的动画效果。

● 设置对象动画的循环次数：infinite（无限循环）。

将动画运行整个过程的分为0%，12.5%，25%，37.5%，50%，62.5%，75%，87.5%，100%这8个阶段，在不同的阶段运用颜色的透明度制作出不同的阴影效果。

![SouthEast 4][]

#load5,
     #loader5 {
       margin: 80px 50px;
       float: left;
       font-size: 25px;
       width: 1em;
       height: 1em;
       border-radius: 50%;
       position: relative;
       text-indent: -9999em;
       -webkit-animation: load5 1.1s infinite ease;
       animation: load5 1.1s infinite ease;
     }
     @-webkit-keyframes load5 {
       0%,
       100% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 1), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                      2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                      0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.5), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.7);
       }
       12.5% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.7), 1.8em -1.8em 0 0 rgba(128, 0, 255, 1),
                      2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                      0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.5);
       }
       25% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.5), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.7),
                      2.5em 0 0 0 rgba(128, 0, 255, 0.5), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                      0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       37.5% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0em rgba(128, 0, 255, 0.5),
                      2.5em 0em 0 0 rgba(128, 0, 255, 0.7), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                      0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       50% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                      2.5em 0 0 0 rgba(128, 0, 255, 0.5), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.7),
                      0 2.5em 0 0 rgba(128, 0, 255, 1), -1.8em 1.8em 0 0 rgba(128, 255, 0, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       62.5% {
           box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                       2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.5),
                       0 2.5em 0 0 rgba(128, 0, 255, 0.7), -1.8em 1.8em 0 0 rgba(128, 0, 255, 1),
                       -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       75% {
           box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                       2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                       0 2.5em 0 0 rgba(128, 0, 255, 0.5), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.7),
                       -2.6em 0 0 0 rgba(128, 0, 255, 1), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       87.5% {
           box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                       2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                       0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.5),
                       -2.6em 0 0 0 rgba(128, 0, 255, 0.7), -1.8em -1.8em 0 0 rgba(128, 0, 255, 1);
       }
     }
     @keyframes load5 {
       0%,
       100% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 1), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                      2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                      0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.5), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.7);
       }
       12.5% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.7), 1.8em -1.8em 0 0 rgba(128, 0, 255, 1),
                      2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                      0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.5);
       }
       25% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.5), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.7),
                      2.5em 0 0 0 rgba(128, 0, 255, 0.5), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                      0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       37.5% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0em rgba(128, 0, 255, 0.5),
                      2.5em 0em 0 0 rgba(128, 0, 255, 0.7), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                      0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       50% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                      2.5em 0 0 0 rgba(128, 0, 255, 0.5), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.7),
                      0 2.5em 0 0 rgba(128, 0, 255, 1), -1.8em 1.8em 0 0 rgba(128, 255, 0, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       62.5% {
           box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                       2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.5),
                       0 2.5em 0 0 rgba(128, 0, 255, 0.7), -1.8em 1.8em 0 0 rgba(128, 0, 255, 1),
                       -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       75% {
           box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                       2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                       0 2.5em 0 0 rgba(128, 0, 255, 0.5), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.7),
                       -2.6em 0 0 0 rgba(128, 0, 255, 1), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       87.5% {
           box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                       2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                       0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.5),
                       -2.6em 0 0 0 rgba(128, 0, 255, 0.7), -1.8em -1.8em 0 0 rgba(128, 0, 255, 1);
       }
     }

**6.粒子旋转伸缩加载动画：**

运用CSS3的旋转Transform属性和动画的执行百分比制作而成。

![SouthEast 5][]

#loader6 {
      margin: 60px 50px;
      float: left;
      font-size: 90px;
      text-indent: -9999em;
      overflow: hidden;
      width: 1em;
      height: 1em;
      border-radius: 50%;
      position: relative;
      -webkit-animation: load6 1.7s infinite ease;
      animation: load6 1.7s infinite ease;
     }
     @-webkit-keyframes load6 {
        0% {
          -webkit-transform: rotate(0deg);
          transform: rotate(0deg);
          box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.11em -0.83em 0 -0.42em #ff0000,
                      -0.11em -0.83em 0 -0.44em #ff0000, -0.11em -0.83em 0 -0.46em #ff0000,
                      -0.11em -0.83em 0 -0.477em #ff0000;
          }
        5%,
        95% {
          box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.11em -0.83em 0 -0.42em #ff0000,
                      -0.11em -0.83em 0 -0.44em #ff0000, -0.11em -0.83em 0 -0.46em #ff0000,
                      -0.11em -0.83em 0 -0.477em #ff0000;
        }
        30% {
          box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.51em -0.66em 0 -0.42em #ff0000,
                      -0.75em -0.36em 0 -0.44em #ff0000, -0.83em -0.03em 0 -0.46em #ff0000,
                      -0.81em 0.21em 0 -0.477em #ff0000;
        }
        55% {
          box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.29em -0.78em 0 -0.42em #ff0000,
                      -0.43em -0.72em 0 -0.44em #ff0000, -0.52em -0.65em 0 -0.46em #ff0000,
                      -0.57em -0.61em 0 -0.477em #ff0000;
        }
        100% {
          -webkit-transform: rotate(360deg);
          transform: rotate(360deg);
          box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.11em -0.83em 0 -0.42em #ff0000,
                      -0.11em -0.83em 0 -0.44em #ff0000, -0.11em -0.83em 0 -0.46em #ff0000,
                      -0.11em -0.83em 0 -0.477em #ff0000;
        }
     }
    @keyframes load6 {
      0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
        box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.11em -0.83em 0 -0.42em #ff0000,
                    -0.11em -0.83em 0 -0.44em #ff0000, -0.11em -0.83em 0 -0.46em #ff0000,
                    -0.11em -0.83em 0 -0.477em #ff0000;
        }
      5%,
      95% {
        box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.11em -0.83em 0 -0.42em #ff0000,
                    -0.11em -0.83em 0 -0.44em #ff0000, -0.11em -0.83em 0 -0.46em #ff0000,
                    -0.11em -0.83em 0 -0.477em #ff0000;
      }
      30% {
        box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.51em -0.66em 0 -0.42em #ff0000,
                    -0.75em -0.36em 0 -0.44em #ff0000, -0.83em -0.03em 0 -0.46em #ff0000,
                    -0.81em 0.21em 0 -0.477em #ff0000;
      }
      55% {
        box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.29em -0.78em 0 -0.42em #ff0000,
                    -0.43em -0.72em 0 -0.44em #ff0000, -0.52em -0.65em 0 -0.46em #ff0000,
                    -0.57em -0.61em 0 -0.477em #ff0000;
      }
      100% {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg);
        box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.11em -0.83em 0 -0.42em #ff0000,
                    -0.11em -0.83em 0 -0.44em #ff0000, -0.11em -0.83em 0 -0.46em #ff0000,
                    -0.11em -0.83em 0 -0.477em #ff0000;
      }
    }

7.横向粒子变动加载动画：

此处用到了CSS3动画animation属性的animation-fill-mode属性和animation-delay属性。  
● animation-fill-mode属性规定动画在播放之前或之后，其动画效果是否可见。  
none：不改变默认行为。

forwards：当动画完成后，保持最后一个属性值（在最后一个关键帧中定义）。

backwards：在animation-delay所指定的一段时间内，在动画显示之前，应用开始属性值（在第一个关键帧

中定义）。

both： 向前和向后填充模式都被应用。

● animation-delay属性定义动画何时开始。该属性允许负值，示例中延迟0.16s执行动画。

![SouthEast 6][]

#loader7:before,
    #loader7:after,
    #loader7 {
      border-radius: 50%;
      width: 2.5em;
      height: 2.5em;
      -webkit-animation-fill-mode: both;
      animation-fill-mode: both;
      -webkit-animation: load7 1.8s infinite ease-in-out;
      animation: load7 1.8s infinite ease-in-out;
    }
    #loader7 {
      margin: 60px 50px;
      float: left;
      font-size: 10px;
      position: relative;
      text-indent: -9999em;
      -webkit-animation-delay: 0.16s;
      animation-delay: 0.16s;
    }
    #loader7:before {
      left: -3.5em;
    }
    #loader7:after {
      left: 3.5em;
      -webkit-animation-delay: 0.32s;
      animation-delay: 0.32s;
    }
    #loader7:before,
    #loader7:after {
      content: '';
      position: absolute;
      top: 0;
    }
    @-webkit-keyframes load7 {
      0%,
      80%,
      100% {
        box-shadow: 0 2.5em 0 -1.3em #000000;
      }
      40% {
        box-shadow: 0 2.5em 0 0 #000000;
      }
    }
    @keyframes load7 {
      0%,
      80%,
      100% {
        box-shadow: 0 2.5em 0 -1.3em #000000;
      }
      40% {
        box-shadow: 0 2.5em 0 0 #000000;
      }
    }

**8.圆环旋转加载动画：**

![SouthEast 7][]

#loader8 {
      margin: 30px 50px;
      float: left;
      font-size: 10px;
      position: relative;
      text-indent: -9999em;
      border-top: 1.1em solid rgba(255, 128, 0, 0.2);
      border-right: 1.1em solid rgba(255, 128, 0, 0.2);
      border-bottom: 1.1em solid rgba(255, 128, 0, 0.2);
      border-left: 1.1em solid rgba(255, 128, 0, 1);
      -webkit-animation: load8 1.1s infinite linear;
      animation: load8 1.1s infinite linear;
    }
    #loader8,
    #loader8:after {
      border-radius: 50%;
      width: 10em;
      height: 10em;
    }
    @-webkit-keyframes load8 {
      0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
      }
      100% {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg);
      }
    }
    @keyframes load8 {
      0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
      }
      100% {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg);
      }
    }

完整的示例Demo：

![SouthEast 8][]

<!DOCTYPE html>
    <html>
    <head>
      <meta charset="UTF-8">
      <title>CSS3绘制加载动画</title>
      <style>
      #loader1,
      #loader1:before,
      #loader1:after {
         background: #f2fa08;
         -webkit-animation: load1 1s infinite ease-in-out;
         animation: load1 1s infinite ease-in-out;
         width: 1em;
         height: 4em;
       }
       #loader1:before,
       #loader1:after {
         position: absolute;
         top: 0;
         content: '';
       }
       #loader1:before {
         left: -1.5em;
       }
       #loader1 {
         text-indent: -9999em;
         margin: 50px 50px;
         position: relative;
         float: left;
         font-size: 11px;
         -webkit-animation-delay: 0.16s;
         animation-delay: 0.16s;
       }
       #loader1:after {
         left: 1.5em;
         -webkit-animation-delay: 0.32s;
         animation-delay: 0.32s;
       }
       @-webkit-keyframes load1 {
         0%,
         80%,
         100% {
           box-shadow: 0 0 #f2fa08;
           height: 4em;
         }
         40% {
           box-shadow: 0 -2em #f2fa08;
           height: 5em;
         }
       }
       @keyframes load1 {
         0%,
         80%,
         100% {
           box-shadow: 0 0 #f2ff08;
           height: 4em;
         }
         40% {
           box-shadow: 0 -2em #f2ff08;
           height: 5em;
         }
       }
    
       #loader2,
       #loader2:before,
       #loader2:after {
         border-radius: 50%;
       }
       #loader2:before,
       #loader2:after {
          position: absolute;
          content: '';
       }
       #loader2:before {
         width: 5.2em;
         height: 10.2em;
         background: #ffffff;
         border-radius: 10.2em 0 0 10.2em;
         top: -0.1em;
         left: -0.1em;
         -webkit-transform-origin: 5.2em 5.1em;
         transform-origin: 5.2em 5.1em;
         -webkit-animation: load2 2s infinite ease 1.5s;
         animation: load2 2s infinite ease 1.5s;
        }
        #loader2 {
          font-size: 11px;
          text-indent: -99999em;
          margin: 20px 20px;
          position: relative;
          float: left;
          width: 10em;
          height: 10em;
          box-shadow: inset 0 0 0 1em #ff0f88;
        }
        #loader2:after {
          width: 5.2em;
          height: 10.2em;
          background: #ffffff;
          border-radius: 0 10.2em 10.2em 0;
          top: -0.1em;
          left: 5.1em;
          -webkit-transform-origin: 0px 5.1em;
          transform-origin: 0px 5.1em;
          -webkit-animation: load2 2s infinite ease;
          animation: load2 2s infinite ease;
         }
         @-webkit-keyframes load2 {
            0% {
              -webkit-transform: rotate(0deg);
              transform: rotate(0deg);
            }
            100% {
              -webkit-transform: rotate(360deg);
              transform: rotate(360deg);
            }
        }
        @keyframes load2 {
           0% {
             -webkit-transform: rotate(0deg);
             transform: rotate(0deg);
           }
           100% {
             -webkit-transform: rotate(360deg);
             transform: rotate(360deg);
           }
       }
    
      #load3,
      #loader3 {
       font-size: 20px;
       margin: 80px 50px;
       float: left;
       width: 1em;
       height: 1em;
       border-radius: 50%;
       position: relative;
       text-indent: -9999em;
       -webkit-animation: load3 1.3s infinite linear;
       animation: load3 1.3s infinite linear;
      }
      @-webkit-keyframes load3 {
         0%,
         100% {
           box-shadow: 0em -3em 0 0.2em #aaff00, 2em -2em 0 0em #aaff00,
                       3em 0 0 -0.5em #aaff00, 2em 2em 0 -0.5em #aaff00,
                       0em 3em 0 -0.5em #aaff00, -2em 2em 0 -0.5em #aaff00,
                       -3em 0 0 -0.5em #aaff00, -2em -2em 0 0em #aaff00;
         }
         12.5% {
           box-shadow: 0 -3em 0 0 #aaff00, 2em -2em 0 0.2em #aaff00,
                       3em 0 0 0 #aaff00, 2em 2em 0 -0.5em #aaff00,
                       0 3em 0 -0.5em #aaff00, -2em 2em 0 -0.5em #aaff00,
                       -3em 0 0 -0.5em #aaff00, -2em -2em 0 -0.5em #aaff00;
         }
         25% {
            box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 0em #aaff00,
                        3em 0 0 0.2em #aaff00, 2em 2em 0 0 #aaff00,
                        0 3em 0 -0.5em #aaff00, -2em 2em 0 -0.5em #aaff00,
                        -3em 0 0 -0.5em #aaff00, -2em -2em 0 -0.5em #aaff00;
         }
         37.5% {
             box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 -0.5em #aaff00,
                         3em 0 0 0 #aaff00, 2em 2em 0 0.2em #aaff00,
                         0 3em 0 0 #aaff00, -2em 2em 0 -0.5em #aaff00,
                         -3em 0 0 -0.5em #aaff00, -2em -2em 0 -0.5em #aaff00;
        }
        50% {
            box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 -0.5em #aaff00,
                        3em 0 0 -0.5em #aaff00, 2em 2em 0 0 #aaff00,
                        0 3em 0 0.2em #aaff00, -2em 2em 0 0 #aaff00,
                        -3em 0 0 -0.5em #aaff00, -2em -2em 0 -0.5em #aaff00;
        }
        62.5% {
            box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 -0.5em #aaff00,
                        3em 0 0 -0.5em #aaff00, 2em 2em 0 -0.5em #aaff00,
                        0 3em 0 0 #aaff00, -2em 2em 0 0.2em #aaff00,
                        -3em 0 0 0 #aaff00, -2em -2em 0 -0.5em #aaff00;
        }
        75% {
           box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 -0.5em #aaff00,
                       3em 0 0 -0.5em #aaff00, 2em 2em 0 -0.5em #aaff00,
                       0 3em 0 -0.5em #aaff00, -2em 2em 0 0 #aaff00,
                       -3em 0 0 0.2em #aaff00, -2em -2em 0 0 #aaff00;
        }
        87.5% {
           box-shadow: 0 -3em 0 0 #aaff00, 2em -2em 0 -0.5em #aaff00,
                       3em 0 0 -0.5em #aaff00, 2em 2em 0 -0.5em #aaff00,
                       0 3em 0 -0.5em #aaff00, -2em 2em 0 0 #aaff00,
                       -3em 0 0 0 #aaff00, -2em -2em 0 0.2em #aaff00;
        }
      }
      @keyframes load3 {
        0%,
        100% {
            box-shadow: 0 -3em 0 0.2em #aaff00, 2em -2em 0 0 #aaff00,
                        3em 0 0 -0.5em #aaff00, 2em 2em 0 -0.5em #aaff00,
                        0 3em 0 -0.5em #aaff00, -2em 2em 0 -0.5em #aaff00,
                        -3em 0 0 -0.5em #aaff00, -2em -2em 0 0 #aaff00;
        }
        12.5% {
            box-shadow: 0 -3em 0 0 #aaff00, 2em -2em 0 0.2em #aaff00,
                        3em 0 0 0 #aaff00, 2em 2em 0 -0.5em #aaff00,
                        0 3em 0 -0.5em #aaff00, -2em 2em 0 -0.5em #aaff00,
                        -3em 0 0 -0.5em #aaff00, -2em -2em 0 -0.5em #aaff00;
        }
        25% {
            box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 0 #aaff00,
                        3em 0 0 0.2em #aaff00, 2em 2em 0 0 #aaff00,
                        0 3em 0 -0.5em #aaff00, -2em 2em 0 -0.5em #aaff00,
                        -3em 0 0 -0.5em #aaff00, -2em -2em 0 -0.5em #aaff00;
        }
        37.5% {
           box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 -0.5em #aaff00,
                       3em 0 0 0 #aaff00, 2em 2em 0 0.2em #aaff00,
                       0 3em 0 0 #aaff00, -2em 2em 0 -0.5em #aaff00,
                       -3em 0 0 -0.5em #aaff00, -2em -2em 0 -0.5em #aaff00;
         }
         50% {
            box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 -0.5em #aaff00,
                        3em 0 0 -0.5em #aaff00, 2em 2em 0 0 #aaff00,
                        0 3em 0 0.2em #aaff00, -2em 2em 0 0 #aaff00,
                        -3em 0 0 -0.5em #aaff00, -2em -2em 0 -0.5em #aaff00;
         }
         62.5% {
             box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 -0.5em #aaff00,
                         3em 0 0 -0.5em #aaff00, 2em 2em 0 -0.5em #aaff00,
                         0 3em 0 0 #aaff00, -2em 2em 0 0.2em #aaff00,
                         -3em 0 0 0 #aaff00, -2em -2em 0 -0.5em #aaff00;
        }
        75% {
            box-shadow: 0 -3em 0 -0.5em #aaff00, 2em -2em 0 -0.5em #aaff00,
                        3em 0 0 -0.5em #aaff00, 2em 2em 0 -0.5em #aaff00,
                        0 3em 0 -0.5em #aaff00, -2em 2em 0 0 #aaff00,
                        -3em 0 0 0.2em #aaff00, -2em -2em 0 0 #aaff00;
         }
         87.5% {
             box-shadow: 0 -3em 0 0 #aaff00, 2em -2em 0 -0.5em #aaff00,
                         3em 0 0 -0.5em #aaff00, 2em 2em 0 -0.5em #aaff00,
                         0 3em 0 -0.5em #aaff00, -2em 2em 0 0 #aaff00,
                         -3em 0 0 0 #aaff00, -2em -2em 0 0.2em #aaff00;
        }
      }
    
      #loader4 {
        font-size: 10px;
        margin: 20px 20px;
        float: left;
        text-indent: -9999em;
        width: 11em;
        height: 11em;
        border-radius: 50%;
        background: #ffffff;
        background: -moz-linear-gradient(left, #ff00ff 10%, rgba(255, 255, 255, 0) 42%);
        background: -webkit-linear-gradient(left, #ff00ff 10%, rgba(255, 255, 255, 0) 42%);
        background: -o-linear-gradient(left, #ff00ff 10%, rgba(255, 255, 255, 0) 42%);
        background: -ms-linear-gradient(left, #ff00ff 10%, rgba(255, 255, 255, 0) 42%);
        background: linear-gradient(to right, #ff00ff 10%, rgba(255, 255, 255, 0) 42%);
        position: relative;
        -webkit-animation: load4 1.4s infinite linear;
        animation: load4 1.4s infinite linear;
      }
      #loader4:before {
        width: 50%;
        height: 50%;
        background: #ff00ff;
        border-radius: 100% 0 0 0;
        position: absolute;
        top: 0;
        left: 0;
        content: '';
      }
      #loader4:after {
        background: #ffffff;
        width: 75%;
        height: 75%;
        border-radius: 50%;
        content: '';
        margin: auto;
        position: absolute;
        top: 0;
        left: 0;
        bottom: 0;
        right: 0;
      }
      @-webkit-keyframes load4 {
        0% {
          -webkit-transform: rotate(0deg);
          transform: rotate(0deg);
        }
        100% {
          -webkit-transform: rotate(360deg);
          transform: rotate(360deg);
        }
      }
      @keyframes load4 {
        0% {
          -webkit-transform: rotate(0deg);
          transform: rotate(0deg);
        }
        100% {
          -webkit-transform: rotate(360deg);
          transform: rotate(360deg);
        }
      }
    
     #load5,
     #loader5 {
       margin: 80px 50px;
       float: left;
       font-size: 25px;
       width: 1em;
       height: 1em;
       border-radius: 50%;
       position: relative;
       text-indent: -9999em;
       -webkit-animation: load5 1.1s infinite ease;
       animation: load5 1.1s infinite ease;
     }
     @-webkit-keyframes load5 {
       0%,
       100% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 1), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                      2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                      0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.5), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.7);
       }
       12.5% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.7), 1.8em -1.8em 0 0 rgba(128, 0, 255, 1),
                      2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                      0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.5);
       }
       25% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.5), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.7),
                      2.5em 0 0 0 rgba(128, 0, 255, 0.5), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                      0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       37.5% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0em rgba(128, 0, 255, 0.5),
                      2.5em 0em 0 0 rgba(128, 0, 255, 0.7), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                      0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       50% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                      2.5em 0 0 0 rgba(128, 0, 255, 0.5), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.7),
                      0 2.5em 0 0 rgba(128, 0, 255, 1), -1.8em 1.8em 0 0 rgba(128, 255, 0, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       62.5% {
           box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                       2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.5),
                       0 2.5em 0 0 rgba(128, 0, 255, 0.7), -1.8em 1.8em 0 0 rgba(128, 0, 255, 1),
                       -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       75% {
           box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                       2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                       0 2.5em 0 0 rgba(128, 0, 255, 0.5), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.7),
                       -2.6em 0 0 0 rgba(128, 0, 255, 1), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       87.5% {
           box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                       2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                       0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.5),
                       -2.6em 0 0 0 rgba(128, 0, 255, 0.7), -1.8em -1.8em 0 0 rgba(128, 0, 255, 1);
       }
     }
     @keyframes load5 {
       0%,
       100% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 1), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                      2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                      0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.5), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.7);
       }
       12.5% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.7), 1.8em -1.8em 0 0 rgba(128, 0, 255, 1),
                      2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                      0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.5);
       }
       25% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.5), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.7),
                      2.5em 0 0 0 rgba(128, 0, 255, 0.5), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                      0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       37.5% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0em rgba(128, 0, 255, 0.5),
                      2.5em 0em 0 0 rgba(128, 0, 255, 0.7), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                      0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       50% {
          box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                      2.5em 0 0 0 rgba(128, 0, 255, 0.5), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.7),
                      0 2.5em 0 0 rgba(128, 0, 255, 1), -1.8em 1.8em 0 0 rgba(128, 255, 0, 0.2),
                      -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       62.5% {
           box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                       2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.5),
                       0 2.5em 0 0 rgba(128, 0, 255, 0.7), -1.8em 1.8em 0 0 rgba(128, 0, 255, 1),
                       -2.6em 0 0 0 rgba(128, 0, 255, 0.2), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       75% {
           box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                       2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                       0 2.5em 0 0 rgba(128, 0, 255, 0.5), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.7),
                       -2.6em 0 0 0 rgba(128, 0, 255, 1), -1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2);
       }
       87.5% {
           box-shadow: 0 -2.6em 0 0 rgba(128, 0, 255, 0.2), 1.8em -1.8em 0 0 rgba(128, 0, 255, 0.2),
                       2.5em 0 0 0 rgba(128, 0, 255, 0.2), 1.75em 1.75em 0 0 rgba(128, 0, 255, 0.2),
                       0 2.5em 0 0 rgba(128, 0, 255, 0.2), -1.8em 1.8em 0 0 rgba(128, 0, 255, 0.5),
                       -2.6em 0 0 0 rgba(128, 0, 255, 0.7), -1.8em -1.8em 0 0 rgba(128, 0, 255, 1);
       }
     }
    
    #loader6 {
      margin: 60px 50px;
      float: left;
      font-size: 90px;
      text-indent: -9999em;
      overflow: hidden;
      width: 1em;
      height: 1em;
      border-radius: 50%;
      position: relative;
      -webkit-animation: load6 1.7s infinite ease;
      animation: load6 1.7s infinite ease;
     }
     @-webkit-keyframes load6 {
        0% {
          -webkit-transform: rotate(0deg);
          transform: rotate(0deg);
          box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.11em -0.83em 0 -0.42em #ff0000,
                      -0.11em -0.83em 0 -0.44em #ff0000, -0.11em -0.83em 0 -0.46em #ff0000,
                      -0.11em -0.83em 0 -0.477em #ff0000;
          }
        5%,
        95% {
          box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.11em -0.83em 0 -0.42em #ff0000,
                      -0.11em -0.83em 0 -0.44em #ff0000, -0.11em -0.83em 0 -0.46em #ff0000,
                      -0.11em -0.83em 0 -0.477em #ff0000;
        }
        30% {
          box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.51em -0.66em 0 -0.42em #ff0000,
                      -0.75em -0.36em 0 -0.44em #ff0000, -0.83em -0.03em 0 -0.46em #ff0000,
                      -0.81em 0.21em 0 -0.477em #ff0000;
        }
        55% {
          box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.29em -0.78em 0 -0.42em #ff0000,
                      -0.43em -0.72em 0 -0.44em #ff0000, -0.52em -0.65em 0 -0.46em #ff0000,
                      -0.57em -0.61em 0 -0.477em #ff0000;
        }
        100% {
          -webkit-transform: rotate(360deg);
          transform: rotate(360deg);
          box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.11em -0.83em 0 -0.42em #ff0000,
                      -0.11em -0.83em 0 -0.44em #ff0000, -0.11em -0.83em 0 -0.46em #ff0000,
                      -0.11em -0.83em 0 -0.477em #ff0000;
        }
     }
    @keyframes load6 {
      0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
        box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.11em -0.83em 0 -0.42em #ff0000,
                    -0.11em -0.83em 0 -0.44em #ff0000, -0.11em -0.83em 0 -0.46em #ff0000,
                    -0.11em -0.83em 0 -0.477em #ff0000;
        }
      5%,
      95% {
        box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.11em -0.83em 0 -0.42em #ff0000,
                    -0.11em -0.83em 0 -0.44em #ff0000, -0.11em -0.83em 0 -0.46em #ff0000,
                    -0.11em -0.83em 0 -0.477em #ff0000;
      }
      30% {
        box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.51em -0.66em 0 -0.42em #ff0000,
                    -0.75em -0.36em 0 -0.44em #ff0000, -0.83em -0.03em 0 -0.46em #ff0000,
                    -0.81em 0.21em 0 -0.477em #ff0000;
      }
      55% {
        box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.29em -0.78em 0 -0.42em #ff0000,
                    -0.43em -0.72em 0 -0.44em #ff0000, -0.52em -0.65em 0 -0.46em #ff0000,
                    -0.57em -0.61em 0 -0.477em #ff0000;
      }
      100% {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg);
        box-shadow: -0.11em -0.83em 0 -0.4em #ff0000, -0.11em -0.83em 0 -0.42em #ff0000,
                    -0.11em -0.83em 0 -0.44em #ff0000, -0.11em -0.83em 0 -0.46em #ff0000,
                    -0.11em -0.83em 0 -0.477em #ff0000;
      }
    }
    
    #loader7:before,
    #loader7:after,
    #loader7 {
      border-radius: 50%;
      width: 2.5em;
      height: 2.5em;
      -webkit-animation-fill-mode: both;
      animation-fill-mode: both;
      -webkit-animation: load7 1.8s infinite ease-in-out;
      animation: load7 1.8s infinite ease-in-out;
    }
    #loader7 {
      margin: 60px 50px;
      float: left;
      font-size: 10px;
      position: relative;
      text-indent: -9999em;
      -webkit-animation-delay: 0.16s;
      animation-delay: 0.16s;
    }
    #loader7:before {
      left: -3.5em;
    }
    #loader7:after {
      left: 3.5em;
      -webkit-animation-delay: 0.32s;
      animation-delay: 0.32s;
    }
    #loader7:before,
    #loader7:after {
      content: '';
      position: absolute;
      top: 0;
    }
    @-webkit-keyframes load7 {
      0%,
      80%,
      100% {
        box-shadow: 0 2.5em 0 -1.3em #000000;
      }
      40% {
        box-shadow: 0 2.5em 0 0 #000000;
      }
    }
    @keyframes load7 {
      0%,
      80%,
      100% {
        box-shadow: 0 2.5em 0 -1.3em #000000;
      }
      40% {
        box-shadow: 0 2.5em 0 0 #000000;
      }
    }
    
    #loader8 {
      margin: 30px 50px;
      float: left;
      font-size: 10px;
      position: relative;
      text-indent: -9999em;
      border-top: 1.1em solid rgba(255, 128, 0, 0.2);
      border-right: 1.1em solid rgba(255, 128, 0, 0.2);
      border-bottom: 1.1em solid rgba(255, 128, 0, 0.2);
      border-left: 1.1em solid rgba(255, 128, 0, 1);
      -webkit-animation: load8 1.1s infinite linear;
      animation: load8 1.1s infinite linear;
    }
    #loader8,
    #loader8:after {
      border-radius: 50%;
      width: 10em;
      height: 10em;
    }
    @-webkit-keyframes load8 {
      0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
      }
      100% {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg);
      }
    }
    @keyframes load8 {
      0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
      }
      100% {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg);
      }
    }
      </style>
    </head>
    <body>
      <div id="loader1" ></div>
      <div id="loader2" ></div>
      <div id="loader3" ></div>
      <div id="loader4" ></div>
      <div id="loader5" ></div>
      <div id="loader6" ></div>
      <div id="loader7" ></div>
      <div id="loader8" ></div>
    </body>
    </html>

参考文档：

[http://www.webhek.com/misc/css-loaders][http_www.webhek.com_misc_css-loaders]

[http://www.w3cplus.com/css3/transform-origin.html][http_www.w3cplus.com_css3_transform-origin.html]

[http://www.w3school.com.cn/css3/css3\_animation.asp][http_www.w3school.com.cn_css3_css3_animation.asp]

[SouthEast]: /images/20220724/a40987e04d42456dad9efca7f6f5af2e.png
[SouthEast 1]: /images/20220724/4f999ccfc6f346ca81d99da346f4fb61.png
[SouthEast 2]: /images/20220724/caae0c1671ae437dadfba45ae129fa8a.png
[SouthEast 3]: /images/20220724/925a02314dd740eeb903ff9018f4d564.png
[SouthEast 4]: /images/20220724/89de15b85f3c475daee9403ed76b3a81.png
[SouthEast 5]: /images/20220724/5659d2e866b34ad3be789ea4f075f132.png
[SouthEast 6]: /images/20220724/4e09ac8b1fd84f56bf40bee7a067fa09.png
[SouthEast 7]: /images/20220724/160355c99d934d4cbe36d40c1daa1179.png
[SouthEast 8]: /images/20220724/644f70ca63be429c96d347347af6ef0a.png
[http_www.webhek.com_misc_css-loaders]: http://www.webhek.com/misc/css-loaders
[http_www.w3cplus.com_css3_transform-origin.html]: http://www.w3cplus.com/css3/transform-origin.html
[http_www.w3school.com.cn_css3_css3_animation.asp]: http://www.w3school.com.cn/css3/css3_animation.asp