css样式莫名无效

[已解决问题] 解决于 2016-05-10 18:56

 1 <%@ page language="java" contentType="text/html; charset=utf-8"
 2     pageEncoding="utf-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <style type="text/css">
 6 table.tab {
 7     font-family: verdana, arial, sans-serif;
 8     font-size: 11px;
 9     color: #333333;
10     border-width: 1px;
11     border-color: #666666;
12     border-collapse: collapse;
13 }
14 
15 table.tab td {
16     border-width: 1px;
17     padding: 8px;
18     border-style: solid;
19     border-color: #666666;
20     background-color: #dedede;
21 }
22 
23 table.tab tr {
24     border-width: 1px;
25     padding: 8px;
26     border-style: solid;
27     border-color: #666666;
28     background-color: #ffffff;
29 }
30 </style>
31 <head>
32 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
33 <title>index</title>
34 </head>
35 <body>
36     <form action="inputlog" method="post">
37         <div align="center">
38             <table align="center" class="tab'">
39                 <tr>
40                     <td>账号:</td>
41                     <td><input type="text" name="au.accnumber" /></td>
42                 </tr>
43                 <tr>
44                     <td>密码:</td>
45                     <td><input type="password" name="au.password" /></td>
46                 </tr>
47                 <tr>
48                     <td>
49                         <button type="submit">登录</button>
50                     </td>
51                 </tr>
52             </table>
53         </div>
54     </form>
55 </body>
56 </html>