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<html> <head> <style type="text/css"> body{ background-color: green; } .circle{ margin:0 auto; margin-top:150px; background-color: gray; width: 10em; height: 10em; border-radius: 50%; border: 1.1em solid rgba(255,255,255,0.2); border-left-color:#fff; -webkit-animation: load 1.1s infinite linear; } @-webkit-keyframes load{ from{ transform:rotate(0deg); } to{ transform:rotate(360deg); } } </style> </head> <body> <div class="circle"> </div> </body> </html>
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原文地址:http://www.cnblogs.com/chengshuiqiang/p/4740932.html