虚线:<div style="height:10pxborder-bottom:1px dashed #f11"></div>
主要是用:border
<html><head>
<style>
<!--collapse属性控制表格是否立体凹陷-->
table.coll
{
border-collapse: collapse
border-color:#999
}
td{border-color:#999}
</style>
</head>
<body>
<table class="coll" border="1" width="300">
<tr>
<td>123456789</td>
<td>123456789</td>
</tr>
<tr>
<td>123456789</td>
<td>123456789</td>
</tr>
</table>
</body>
</html>