CSS轮廓属性
该大纲属性是一个简写属性，它允许您为多个属性，如颜色，样式，轮廓宽度指定值。
示例
<html>
<head>
</head>
<body>
<p style = "outline:thin solid green;">
This text is having thin solid freen outline.
</p>
<br />
<p style = "outline:thick dashed #009900;">
This text is having thick dashed green outline.
</p>
<br />
</p>
</body>
</html>