代码示例：（标识：css_outline-style）
<!DOCTYPE html>
<html>
<head>
<style>
p {outline-color:red;}
p.dotted {outline-style: dotted;}
p.dashed {outline-style: dashed;}
p.solid {outline-style: solid;}
p.double {outline-style: double;}
p.groove {outline-style: groove;}
p.ridge {outline-style: ridge;}
p.inset {outline-style: inset;}
p.outset {outline-style: outset;}
</style>
</head>
<body>
<h1>outline-style 属性</h1>
<p class="dotted">点状轮廓</p>
<p class="dashed">虚线轮廓</p>
<p class="solid">实线轮廓</p>
<p class="double">双线轮廓</p>
<p class="groove">凹槽轮廓。效果取决于 outline-color 值。</p>
<p class="ridge">凸脊轮廓。效果取决于 outline-color 值。</p>
<p class="inset">凹边轮廓。效果取决于 outline-color 值。</p>
<p class="outset">凸边轮廓。效果取决于 outline-color 值。</p>
</body>
</html>
