<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>HTML5自由者</title>
<style>
#svgForStroke {
position: absolute;
top: 0;
left: 0;
width: 200px;
height: 200px;
stroke-dasharray: 180%;
stroke-dashoffset: 0%;
stroke: #ED6E5C;
/*stroke-linecap:round;*/
fill: none;
-webkit-transform: rotate(-90deg);
-moz-transform: rotate(-90deg);
-ms-transform: rotate(-90deg);
-o-transform: rotate(-90deg);
transform: rotate(-90deg);
}
</style>
</head>
<body>
<svg id="svgForStroke" xmlns="http://www.w3.org/2000/svg">
<circle cx="50%" cy="50%" r="30%" stroke-width="10%"></circle>
</svg>
<script></script>
</body>
</html>原文：http://blog.csdn.net/html5_/article/details/46583141