<p><b>注意:</b> IE8 及其更早版本需要通过指定 !DOCTYPE 才可以支持 visibility:collapse。</p>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟学堂(edu.jb51.net)</title>
<style>
table, th, td {
border: 1px solid black;
}
tr.collapse {
visibility: collapse;
</style>
</head>
<body>
<table>
<tr>
<th>Firstname</th>
<th>Lastname</th>
</tr>
<td>Peter</td>
<td>Griffin</td>
<tr class="collapse">
<td>Lois</td>