该处用了一个<b>标签的样式来控制了整个父级的垂直居中效果。
复制以下代码到本地，另存为html 运行查看效果：
<!DOCTYPE html> <html> <head> <meta meta="" charset="utf-8" /> <title>Demo</title> <style type="text/css" media="all"> body{color:black;background-color:white;padding:50px;font-size: 12px;line-height:16px;font-family:arial; color: #1E346E;} * {margin: 0;padding:0;border-width: 0;} .list{vertical-align: middle;width:640px;margin-bottom: 1px;border: solid 1px #00a0da;background-color:#F0F5FF; } .list:hover{background-color:#d9e7f5;} .list p,.list b { vertical-align: middle;display: -moz-inline-stack;display:inline-block;zoom:1;*display:inline;} .list p { padding:10px;} .list b { height:52px;width:1px;overflow:hidden;margin-left:-1px;background-color:#009Cd0;} </style> </head> <body> <div class="list"> <b> </b> <p style="width:80px;">first class</p> <p style="width:160px;">Can be modified</p> <p style="width:160px;">Can be refunded.</p> <p style="width:160px;">Can be endorsed</p> </div> <div class="list"> <b> </b> <p style="width: 80px;">Economy class</p> <p style="width:160px;">Can be modified</p> <p style="width:160px;">Can be refunded.</p> <p style="width:160px;">Can be endorsed</p> </div> <div class="list"> <b> </b> <p style="width:80px;">23% off Economy class</p> <p style="width:160px;">One free change permitted within same class if available; further changes charged 10% of fare. Passengers must go to CA ticketing office to process fee-based changes.</p> <p style="width:160px;">10% of fare charged. </p> <p style="width:160px;">Can not be endorsed</p> </div> <div class="list"> <b> </b> <p style="width:80px;">-6% off Economy class</p> <p style="width:160px;">Free change permitted within same class if available at least 4 days prior to departure.</p> <p style="width:160px;">20% of fare charged (minimum CNY50 charge).</p> <p style="width:160px;">Can not be endorsed</p> </div> </body> </html>
原文：http://www.cnblogs.com/3box/p/4573093.html