css小动画：圆形1s内从小变大随时间渐变 

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style>
        .yxdh{
            width:200px;
            height:200px;
            border: 1px solid red;
            background-color: red;
            transform:translate(400px,0px);
            -webkit-transform:translate(400px,0px);
            border-radius: 100px;
            -moz-border-radius: 100px;
            -webkit-border-radius: 100px;
            animation-name:dh;
            animation-duration: 1s;
            animation-iteration-count: infinite;
            animation-timing-function: ease-in-out;
            -webkit-animation-name:dh;
            -webkit-animation-duration: 1s;
            -webkit-animation-iteration-count: infinite;
            -webkit-animation-timing-function: ease-in-out;
            margin:100px auto;
        }
        @keyframes dh {
            0%{
                transform: scale(0);
                opacity:100;
               -webkit-transform: scale(0);
            }
            100%{
                transform: scale(1);
                opacity: 0;
                -webkit-transform: scale(1);
            }

        }
        @-webkit-keyframes dh {
            0%{
                transform: scale(0);
                opacity: 100;
                -webkit-transform: scale(0);
            }
            100%{
                transform: scale(1);
                opacity: 0;
                -webkit-transform: scale(1);
            }
        }
    </style>
</head>
<body>
 <div class="yxdh"></div>
</body>
</html>


posted @ 2015-10-25 23:21  yyt_caroline  阅读(1243)  评论(0)    收藏  举报