如何用纯 CSS 创作一只徘徊的果冻怪兽

谁践踏了优雅 2022-04-13 10:08 184阅读 0赞

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3cxNzgxOTE1MjA_size_16_color_FFFFFF_t_70]

## 效果预览 ##

[在线演示][Link 1]

按下右侧的“点击预览”按钮可以在当前页面预览，点击链接可以全屏预览。

[https://codepen.io/comehope/pen/VdOKQG][https_codepen.io_comehope_pen_VdOKQG]

## 可交互视频 ##

此视频是可以交互的，你可以随时暂停视频，编辑视频中的代码。

请用 chrome, safari, edge 打开观看。

[https://scrimba.com/p/pEgDAM/c43ekUL][https_scrimba.com_p_pEgDAM_c43ekUL]

## 源代码下载 ##

[本地下载][Link 2]

每日前端实战系列的全部源代码请从 github 下载：

[https://github.com/comehope/front-end-daily-challenges][https_github.com_comehope_front-end-daily-challenges]

## 代码解读 ##

定义 dom，容器中包含 2 个元素，分别代表怪兽的身体和眼睛：

设置背景色：

body {
        margin: 0;
        height: 100vh;
        background-color: black;
    }

设置前景色：

.monster {
        width: 100vw;
        height: 50vh;
        background-color: lightcyan;
    }

画出怪兽的身体：

.monster {
        position: relative;
    }
    
    .body {
        position: absolute;
        width: 32vmin;
        height: 32vmin;
        background-color: teal;
        border-radius: 43% 40% 43% 40%;
        bottom: calc(-1 * 32vmin / 2 - 4vmin);
    }

定义怪兽眼睛所在的容器：

.eyes {
        width: 24vmin;
        height: 5vmin;
        position: absolute;
        bottom: 2vmin;
        left: calc(32vmin - 24vmin - 2vmin);
    }

用伪元素画出怪兽的眼睛：

.eyes::before,
    .eyes::after {
        content: '';
        position: absolute;
        width: 5vmin;
        height: 5vmin;
        border: 1.25vmin solid white;
        box-sizing: border-box;
        border-radius: 50%;
    }
    
    .eyes::before {
        left: 4vmin;
    }
    
    .eyes::after {
        right: 4vmin;
    }

为怪兽定义轻轻跳起的动画，结合后面的动画效果，让它具有果冻的弹性：

.body {
        animation:
            bounce 1s infinite alternate;
    }
    
    @keyframes bounce {
        to {
            bottom: calc(-1 * 32vmin / 2 - 2vmin);
        }
    }

让怪兽的身体转动起来：

@keyframes wave {
        to {
            transform: rotate(360deg);
        }
    }

让怪兽徘徊行走：

.monster {
        overflow: hidden;
    }
    
    .body {
        left: -2vmin;
        animation:
            wander 5s linear infinite alternate,
            wave 3s linear infinite,
            bounce 1s infinite alternate;
    }
    
    .eyes {
        animation: wander 5s linear infinite alternate;
    }
    
    @keyframes wander {
        to {
            left: calc(100% - 32vmin + 2vmin);
        }
    }

最后，让怪兽的眼睛眨一眨：

.eyes::before,
    .eyes::after {
        animation: blink 3s infinite linear;
    }
    
    @keyframes blink {
        4%, 10%, 34%, 40% {
            transform: scaleY(1);
        }
    
        7%, 37% {
            transform: scaleY(0);
        }
    }

大功告成！

原文地址：https://segmentfault.com/a/1190000015484852

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3cxNzgxOTE1MjA_size_16_color_FFFFFF_t_70]: /images/20220413/91df474ab8c0432387d90f26c6a585f6.png
[Link 1]: https://www.jqhtml.com/yanshi?demourl=%2Fwp-content%2Fuploads%2F2018%2F11%2Ffront-end-daily-challenges-master%2F070-wandered-jelly-monster&demotitle=%E7%BA%AF%20CSS%20%E5%88%9B%E4%BD%9C%E4%B8%80%E5%8F%AA%E5%BE%98%E5%BE%8A%E7%9A%84%E6%9E%9C%E5%86%BB%E6%80%AA%E5%85%BD
[https_codepen.io_comehope_pen_VdOKQG]: https://codepen.io/comehope/pen/VdOKQG
[https_scrimba.com_p_pEgDAM_c43ekUL]: https://scrimba.com/p/pEgDAM/c43ekUL
[Link 2]: https://www.jqhtml.com/20109.html
[https_github.com_comehope_front-end-daily-challenges]: https://github.com/comehope/front-end-daily-challenges