Author 王平安
E-mail pingan8787@qq.com
博 客 www.pingan8787.com
微 信 pingan8787
每日文章 https://0x9.me/KMrv3

参考文章
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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>纯 CSS 创作一个“女神来了，快让路”的动画</title>
    <style>
        body,html{
            margin: 0;
            height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .container{
            width: 8em;
            height: 1em;
            display: flex;
            justify-content: space-between;
        }
        .container span{
            width: 1em;
            height: 1em;
            --duration:3s;
        }
        .boys{
            width: 6em;
            display: flex;
            justify-content: space-between;
        }
        .container span::before{
            content: '';
            position: absolute;
            width: inherit;
            height: inherit;
            border-radius: 15%;
            box-shadow: 0 0 .2em rgba(0, 0, 0, .3);
        }
        .girl:before{
            background-color: hotpink;
        }
        .boys span::before{
            background-color: dodgerblue;
            animation: var(--duration) ease-in-out infinite;
        }
        .boys span:nth-child(1)::before{
            filter: brightness(1);
            animation-name: jump-down-1;
        }
        .boys span:nth-child(2)::before{
            filter: brightness(1.15);
            animation-name: jump-down-2;
        }
        .boys span:nth-child(3)::before{
            filter: brightness(1.3);
            animation-name: jump-down-3;
        }
        .boys span:nth-child(4)::before{
            filter: brightness(1.45);
            animation-name: jump-down-4;
        }
        .girl{
            animation: slide var(--duration) ease-in-out infinite;
        }
        .boys span {
            animation: var(--duration) ease-in-out infinite;
        }
        .boys span:nth-child(1){
            animation-name: jump-off-1;
        }
        .boys span:nth-child(2){
            animation-name: jump-off-2;
        }
        .boys span:nth-child(3){
            animation-name: jump-off-3;
        }
        .boys span:nth-child(4){
            animation-name: jump-off-4;
        }

        /* 女生方块 向右滑动 */
        @keyframes slide{
            from {
                transform:translateX(0);
                filter:brightness(1);
            }
            to{
                transform: translateX(calc(8em - (1em * 1.25)));
                filter: brightness(1.45);
            }
        }
        /* 第1个男生方块跳动 */
        @keyframes jump-off-1 {
            0%, 15%{
                transform: rotate(0deg);
            }
            35%, 100%{
                transform-origin: -50% center;
                transform: rotate(-180deg);
            }
        }
        /* 第2个男生方块跳动 */
        @keyframes jump-off-2 {
            0%, 30%{
                transform: rotate(0deg);
            }
            50%, 100%{
                transform-origin: -50% center;
                transform: rotate(-180deg);
            }
        }
        /* 第3个男生方块跳动 */
        @keyframes jump-off-3 {
            0%, 45%{
                transform: rotate(0deg);
            }
            65%, 100%{
                transform-origin: -50% center;
                transform: rotate(-180deg);
            }
        }
        /* 第4个男生方块跳动 */
        @keyframes jump-off-4 {
            0%, 60%{
                transform: rotate(0deg);
            }
            80%, 100%{
                transform-origin: -50% center;
                transform: rotate(-180deg);
            }
        }

        /* 动画的过程是从正常到压扁、然后抻长、再压扁、最后恢复正常 */
        @keyframes jump-down-1 {
            5%{
                transform: scale(1,1);
            }
            15%{
                transform-origin: center bottom;
                transform: scale(1.3, 0.7);
            }
            20%, 25%{
                transform-origin: center bottom;
                transform: scale(0.8, 1.4);
            }
            40%{
                transform-origin: center bottom;
                transform: scale(1.3, 0.7);
            }
            55%, 100%{
                transform: scale(1, 1);
            }
        }
        @keyframes jump-down-2 {
            20%{
                transform: scale(1,1);
            }
            30%{
                transform-origin: center bottom;
                transform: scale(1.3, 0.7);
            }
            35%, 40%{
                transform-origin: center bottom;
                transform: scale(0.8, 1.4);
            }
            55%{
                transform-origin: center bottom;
                transform: scale(1.3, 0.7);
            }
            70%, 100%{
                transform: scale(1, 1);
            }
        }
        @keyframes jump-down-3 {
            35%{
                transform: scale(1,1);
            }
            45%{
                transform-origin: center bottom;
                transform: scale(1.3, 0.7);
            }
            50%, 55%{
                transform-origin: center bottom;
                transform: scale(0.8, 1.4);
            }
            70%{
                transform-origin: center bottom;
                transform: scale(1.3, 0.7);
            }
            85%, 100%{
                transform: scale(1, 1);
            }
        }
        @keyframes jump-down-4 {
            50%{
                transform: scale(1,1);
            }
            60%{
                transform-origin: center bottom;
                transform: scale(1.3, 0.7);
            }
            65%, 70%{
                transform-origin: center bottom;
                transform: scale(0.8, 1.4);
            }
            85%{
                transform-origin: center bottom;
                transform: scale(1.3, 0.7);
            }
            100%, 100%{
                transform: scale(1, 1);
            }
        }
    </style>
</head>
<body>
    <!-- 原文 https://segmentfault.com/a/1190000016287188 -->
    <div class="container">
        <span class="girl"></span>
        <div class="boys">
            <span></span>
            <span></span>
            <span></span>
            <span></span>
        </div>
    </div>
</body>
</html>