css3实现流星雨特效

今天药忘吃喽~ 2021-12-10 08:37 431阅读 0赞

用到css3知识:     radial-gradient 径向渐变，   filter， transform， animation以及  nth-child选择器等

html代码：

css3代码：

*{
        margin: 0;
        padding: 0;
    }
    body{
        background: radial-gradient(ellipse at bottom, #1b2735 0%, #090a0f 100%);
        height: 100vh;        /* == height: 100%  */
        overflow: hidden;
        font-family: 'Times New Roman', Times, serif;
        justify-content: center;
        align-items: center;
    }
    
    .container{
        position: relative;
        width: 100%;
        height: 100%;
        -webkit-transform: rotate(45deg);
                transform: rotateZ(45deg);
        -webkit-animation: sky 200000ms linear infinite;
                animation: sky 200000ms linear infinite;
    }
    
    .meteor{
        position: absolute;
        left: 50%;
        top: 50%;
        height: 2px;
        background: linear-gradient(-45deg, #5f91ff, rgba(0, 0, 255, 0));
        border-radius: 999px;
        -webkit-filter: drop-shadow(0 0 6px #699bff);
                filter: drop-shadow(0 0 6px #699bff);
        -webkit-animation: tail 3000ms ease-in-out infinite, shooting 3000ms ease-in-out infinite;
                animation: tail 3000ms ease-in-out infinite, shooting 3000ms ease-in-out infinite; 
    }
    
    .meteor::before, .meteor::after{
        content: '';
        position: absolute;
        top: calc(50% - 1px);
        right: 0;
        height: 2px;
        background: linear-gradient(-45deg, rgba(0, 0, 255, 0), #5f91ff, rgba(0, 0, 255, 0) );
        -webkit-transform: translateX(50%) rotateZ(45deg);
                transform: translateX(50%) rotateZ(45deg);
        border-radius: 100%;
        -webkit-animation: shining 3000ms ease-in-out infinite;
                animation: shining 3000ms ease-in-out infinite;
    }
    
    .meteor::after{
        -webkit-transform: translateX(50%) rotateZ(-45deg);
                transform: translateX(50%) rotateZ(-45deg);
    }
    
    /* 1 */
    .meteor:nth-child(1){
        top: calc(50% - 185px);
        left: calc(50% - 150px);
        -webkit-animation-delay: 8888ms;
                animation-delay: 8888ms;
    }
    .meteor:nth-child(1)::before, .meteor:nth-child(1)::after, .meteor:nth-child(1)::after{
        -webkit-animation-delay: 8888ms;
                animation-delay: 8888ms;
    }
    /* 2 */
    .meteor:nth-child(2){
        top: calc(50% - 50px);
        left: calc(50% - 180px);
        -webkit-animation-delay: 9288ms;
                animation-delay: 9288ms;
    }
    .meteor:nth-child(2)::before, .meteor:nth-child(2)::after, .meteor:nth-child(2)::after{
        -webkit-animation-delay: 9288ms;
                animation-delay: 9288ms;
    }
    
    .meteor:nth-child(3){
        top: calc(50% - 145px);
        left: calc(50% - 135px);
        -webkit-animation-delay: 8600ms;
                animation-delay: 8600ms;
    }
    .meteor:nth-child(3)::before, .meteor:nth-child(3)::after, .meteor:nth-child(3)::after{
        -webkit-animation-delay: 8600ms;
                animation-delay: 8600ms;
    }
    
    .meteor:nth-child(4){
        top: calc(50% - 78px);
        left: calc(50% - 155px);
        -webkit-animation-delay: 3288ms;
                animation-delay: 3288ms;
    }
    .meteor:nth-child(4)::before, .meteor:nth-child(4)::after, .meteor:nth-child(4)::after{
        -webkit-animation-delay: 3288ms;
                animation-delay: 3288ms;
    }
    
    .meteor:nth-child(5){
        top: calc(50% - 183px);
        left: calc(50% - 8px);
        -webkit-animation-delay: 5588ms;
                animation-delay: 5588ms;
    }
    .meteor:nth-child(5)::before, .meteor:nth-child(5)::after, .meteor:nth-child(5)::after{
        -webkit-animation-delay: 5588ms;
                animation-delay: 5588ms;
    }
    
    .meteor:nth-child(6){
        top: calc(50% - 30px);
        left: calc(50% - 195px);
        -webkit-animation-delay: 9388ms;
                animation-delay: 9388ms;
    }
    .meteor:nth-child(6)::before, .meteor:nth-child(6)::after, .meteor:nth-child(6)::after{
        -webkit-animation-delay: 9388ms;
                animation-delay: 9388ms;
    }
    
    .meteor:nth-child(7){
        top: calc(50% - 95px);
        left: calc(50% - 70px);
        -webkit-animation-delay: 2588ms;
                animation-delay: 2588ms;
    }
    .meteor:nth-child(7)::before, .meteor:nth-child(7)::after, .meteor:nth-child(7)::after{
        -webkit-animation-delay: 2588ms;
                animation-delay: 2588ms;
    }
    
    .meteor:nth-child(8){
        top: calc(50% - 60px);
        left: calc(50% - 70px);
        -webkit-animation-delay: 5288ms;
                animation-delay: 5288ms;
    }
    .meteor:nth-child(8)::before, .meteor:nth-child(8)::after, .meteor:nth-child(8)::after{
        -webkit-animation-delay: 5288ms;
                animation-delay: 5288ms;
    }
    
    .meteor:nth-child(9){
        top: calc(50% - 75px);
        left: calc(50% - 250px);
        -webkit-animation-delay: 888ms;
                animation-delay: 888ms;
    }
    .meteor:nth-child(9)::before, .meteor:nth-child(9)::after, .meteor:nth-child(9)::after{
        -webkit-animation-delay: 888ms;
                animation-delay: 888ms;
    }
    
    .meteor:nth-child(9){
        top: calc(50% - 76px);
        left: calc(50% - 240px);
        -webkit-animation-delay: 2388ms;
                animation-delay: 2388ms;
    }
    .meteor:nth-child(9)::before, .meteor:nth-child(9)::after, .meteor:nth-child(9)::after{
        -webkit-animation-delay: 2388ms;
                animation-delay: 2388ms;
    }
    
    .meteor:nth-child(10){
        top: calc(50% - 85px);
        left: calc(50% - 6px);
        -webkit-animation-delay: 3588ms;
                animation-delay: 3588ms;
    }
    .meteor:nth-child(10)::before, .meteor:nth-child(10)::after, .meteor:nth-child(10)::after{
        -webkit-animation-delay: 3588ms;
                animation-delay: 3588ms;
    }
    
    .meteor:nth-child(11){
        top: calc(50% - 135px);
        left: calc(50% - 260px);
        -webkit-animation-delay: 2888ms;
                animation-delay: 2888ms;
    }
    .meteor:nth-child(11)::before, .meteor:nth-child(11)::after, .meteor:nth-child(11)::after{
        -webkit-animation-delay: 2888ms;
                animation-delay: 2888ms;
    }
    
    .meteor:nth-child(12){
        top: calc(50% - 15px);
        left: calc(50% - 8px);
        -webkit-animation-delay: 388ms;
                animation-delay: 388ms;
    }
    .meteor:nth-child(12)::before, .meteor:nth-child(12)::after, .meteor:nth-child(12)::after{
        -webkit-animation-delay: 388ms;
                animation-delay: 388ms;
    }
    
    .meteor:nth-child(13){
        top: calc(50% - 155px);
        left: calc(50% - 50px);
        -webkit-animation-delay: 7288ms;
                animation-delay: 7288ms;
    }
    .meteor:nth-child(13)::before, .meteor:nth-child(13)::after, .meteor:nth-child(13)::after{
        -webkit-animation-delay: 7288ms;
                animation-delay: 7288ms;
    }
    
    .meteor:nth-child(14){
        top: calc(50% - 28px);
        left: calc(50% - 80px);
        -webkit-animation-delay: 8888ms;
                animation-delay: 8888ms;
    }
    .meteor:nth-child(14)::before, .meteor:nth-child(14)::after, .meteor:nth-child(14)::after{
        -webkit-animation-delay: 8888ms;
                animation-delay: 8888ms;
    }
    
    .meteor:nth-child(15){
        top: calc(50% - 35px);
        left: calc(50% - 200px);
        -webkit-animation-delay: 7588ms;
                animation-delay: 7588ms;
    }
    .meteor:nth-child(15)::before, .meteor:nth-child(15)::after, .meteor:nth-child(15)::after{
        -webkit-animation-delay: 7588ms;
                animation-delay: 7588ms;
    }
    
    .meteor:nth-child(16){
        top: calc(50% - 40px);
        left: calc(50% - 250px);
        -webkit-animation-delay: 1888ms;
                animation-delay: 1888ms;
    }
    .meteor:nth-child(16)::before, .meteor:nth-child(16)::after, .meteor:nth-child(16)::after{
        -webkit-animation-delay: 1888ms;
                animation-delay: 1888ms;
    }
    
    
    @-webkit-keyframes tail{
        0%{
            width: 0;
        }
        30%{
            width: 100px;
        }
        100%{
            width: 0;
        }
    }
    @keyframes tail{
        0%{
            width: 0;
        }
        30%{
            width: 100px;
        }
        100%{
            width: 0;
        }
    }
    
    @-webkit-keyframes shining{
        0%{
            width: 0;
        }
        50%{
            width: 30px;
        }
        1000%{
            width: 0;
        }
    }
    @keyframes shining{
        0%{
            width: 0;
        }
        50%{
            width: 30px;
        }
        1000%{
            width: 0;
        }
    }
    
    @-webkit-keyframes shooting{
        0%{
            -webkit-transform: translateX(0);
                    transform: translateX(0);
        }
        100%{
            -webkit-transform: translateX(300px);
                    transform: translateX(300px);
        }
    }
    @keyframes shooting{
        0%{
           -webkit-transform: translateX(0);
                   transform: translateX(0); 
        }
        100%{
            -webkit-transform: translateX(300px);
                    transform: translateX(300px);
        }
    }
    
    @-webkit-keyframes sky{
        0%{
            -webkit-transform: rotate(45deg);
                    transform: rotate(45deg);
        }
        100%{
            -webkit-transform: rotate(405deg);
                    transform: rotate(405deg);
        }
    }
    @keyframes sky{
        0%{
            -webkit-transform: rotate(45deg);
                    transform: rotate(45deg);
        }
        100%{
            -webkit-transform: rotate(405deg);
                    transform: rotate(405deg);
        }
    }

效果动态图：

![20190713141605801.gif][]

[20190713141605801.gif]: /images/20211210/071e6e51534a4fcab48186bfd7c728c1.png