<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>SVG 可伸缩矢量图形 Scalable Vector Graphics</title>
</head>
<body>
<svg width="200" height="200">
<rect x="50" y="20" width="150" height="50" stroke="blue" fill="red"></rect>
<circle cx="120" cy="80" r="40" stroke="black" fill="none" stroke-width="5"></circle>>
</svg>
</body>
</html>