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前端水波纹往外展开1

2019-03-04 09:53:50来源：博客园阅读 ()

来自：https://blog.csdn.net/qq_38658877/article/details/78092649 侵删
<!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>Document</title>
    <style>
    html {
        font-size: 20px;
    }
    
    body {
        background: #444;
    }
    
    .animate .w2 {
        -webkit-animation-delay: 1s;
    }
    
    .animate .w3 {
        -webkit-animation-delay: 2s;
    }
    
    .animate .w4 {
        -webkit-animation-delay: 3s;
    }
    
    .wave {
        width: 22.7rem;
        height: 22.7rem;
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        margin: 0 auto;
    }
    
    .wave * {
        border: 1px solid #fff;
        position: absolute;
        border-radius: 50%;
        -webkit-animation: opac 4s infinite;
    }
    
    @-webkit-keyframes opac {
        from {
            opacity: 1;
            width: 0;
            height: 0;
            top: 50%;
            left: 50%;
        }
        to {
            opacity: 0;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
        }
    }
    </style>
</head>

<body>
    <div class="animate wave">
        <div class="w1"></div>
        <div class="w2"></div>
        <div class="w3"></div>
        <div class="w4"></div>
    </div>
</body>

</html>