css3實現的加載動畫

<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
    <title></title>
    <style type="text/css">
        span {
            text-rendering: optimizeLegibility;
        }
        .spinner.bounce{
            display: block;
            margin: auto;
            width: 65px;
            text-align: center;
            height: 18px;
        }
        .spinner.bounce .one {
            -webkit-animation-delay: -0.32s;
            animation-delay: -0.32s;
        }
        .spinner.bounce .two {
            -webkit-animation-delay: -0.16s;
            animation-delay: -0.16s;
        }
        .spinner.bounce>span {
            width: 18px;
            height: 18px;
            background-color: #ccc;
            border-radius: 100%;
            display: inline-block;
            -webkit-animation: bouncedelay .8s infinite ease-in-out;
            animation: bouncedelay .8s infinite ease-in-out;
            -webkit-animation-fill-mode: both;
            animation-fill-mode: both;
        }
         
        @-webkit-keyframes bouncedelay {
            0%,80%,to {
                -webkit-transform: scale(0.8)
            }
         
            40% {
                -webkit-transform: scale(1)
            }
        }
         
        @keyframes bouncedelay {
            0%,80%,to {
                transform: scale(0.8);
                -webkit-transform: scale(0.8)
            }
         
            40% {
                transform: scale(1);
                -webkit-transform: scale(1)
            }
        }
    </style>
</head>
<body>
    <span class="spinner bounce">
        <span class="one"></span>
        <span class="two"></span>
        <span class="three"></span>
    </span>
</body>
</html>
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