菜鸟学堂
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源代码
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟学堂()</title> <style> div { width:100px; height:100px; background:red; position:relative; animation:myfirst 5s infinite; animation-direction:alternate; /* Safari 和 Chrome */ -webkit-animation:myfirst 5s infinite; -webkit-animation-direction:alternate; } @keyframes myfirst { 0% {background:red; left:0px; top:0px;} 25% {background:yellow; left:200px; top:0px;} 50% {background:blue; left:200px; top:200px;} 75% {background:green; left:0px; top:200px;} 100% {background:red; left:0px; top:0px;} } @-webkit-keyframes myfirst /* Safari 和 Chrome */ { 0% {background:red; left:0px; top:0px;} 25% {background:yellow; left:200px; top:0px;} 50% {background:blue; left:200px; top:200px;} 75% {background:green; left:0px; top:200px;} 100% {background:red; left:0px; top:0px;} } </style> </head> <body> <p><strong>注意:</strong>Internet Explorer 9 及其之前的版本不支持 animation-direction 属性。</p> <div></div> </body> </html>
运行结果
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菜鸟学堂 edu.jb51.net