代码示例：（标识：css_border-bottom-style）
<!DOCTYPE html>
<html>
<head>
<style>
p {border-style: solid;}
p.none {border-bottom-style: none;}
p.dotted {border-bottom-style: dotted;}
p.dashed {border-bottom-style: dashed;}
p.solid {border-bottom-style: solid;}
p.double {border-bottom-style: double;}
p.groove {border-bottom-style: groove;}
p.ridge {border-bottom-style: ridge;}
p.inset {border-bottom-style: inset;}
p.outset {border-bottom-style: outset;}
</style>
</head>
<body>
<p class="none">无下边框。</p>
<p class="dotted">点状下边框。</p>
<p class="dashed">虚线下边框。</p>
<p class="solid">实线下边框。</p>
<p class="double">双线下边框。</p>
<p class="groove">凹槽下边框。</p>
<p class="ridge">垄状下边框。</p>
<p class="inset">内陷下边框。</p>
<p class="outset">凸出下边框。</p>
</body>
</html>
