有关问题请参阅截图:

上面的代码是由html生成的.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" >
<head>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
<title>SYM</title>
<style type="text/css" media="all">
@import "test.css";
</style>
</head>
<body>
<div id="container">
<div class="round-box">
<table class="round-box-layout">
<thead><tr><td></td><td></td><td></td></tr></thead>
<tbody><tr><td></td><td>
Lorem ipsum dolor sit amet, consectetur adipisicing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris
nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in
reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla
pariatur. Excepteur sint occaecat cupidatat non proident, sunt in
culpa qui officia deserunt mollit anim id est laborum.
</td><td></td></tr></tbody>
<tfoot><tr><td></td><td></td><td></td></tr></tfoot>
</table>
</div>
<div class="round-box2">
<table class="round-box-layout">
<thead><tr><td></td><td></td><td></td></tr></thead>
<tbody><tr><td></td><td>
Lorem ipsum dolor sit amet, consectetur adipisicing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris
nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in
reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla
pariatur. Excepteur sint occaecat cupidatat non proident, sunt in
culpa qui officia deserunt mollit anim id est laborum.
</td><td></td></tr></tbody>
<tfoot><tr><td></td><td></td><td></td></tr></tfoot>
</table>
</div>
<body>
</html>
Run Code Online (Sandbox Code Playgroud)
test.css是
.round-box {
width: 250px;
}
table.round-box-layout {
border-collapse: collapse;
width: 100%;
}
table.round-box-layout,
.round-box-layout tr,
.round-box-layout td {
padding: 0;
margin: 0;
border: solid;
}
table.round-box-layout tbody td:first-child {
background: url(img/borders/l-e.png) repeat-y 0 0;
height: 36px;
width: 33px;
}
table.round-box-layout tbody td:last-child {
background: url(img/borders/r-e.png) repeat-y 0 0;
height: 36px;
width: 33px;
}
table.round-box-layout thead td {
background: url(img/borders/t-e.png) repeat-x 0 0;
height: 36px;
width: 33px;
}
table.round-box-layout thead td:first-child {
background: url(img/borders/tl-c.png) no-repeat 0 0;
}
table.round-box-layout thead td:last-child {
background: url(img/borders/tr-c.png) no-repeat 0 0;
}
table.round-box-layout tfoot td {
background: url(img/borders/b-e.png) repeat-x 0 0;
height: 36px;
width: 33px;
}
table.round-box-layout tfoot td:first-child {
background: url(img/borders/bl-c.png) no-repeat 0 0;
}
table.round-box-layout tfoot td:last-child {
background: url(img/borders/br-c.png) no-repeat 0 0;
}
.round-box2 {
width: 800px;
}
Run Code Online (Sandbox Code Playgroud)
问题是第一列和最后一列(第三列)的宽度正在改变.此宽度似乎取决于容器div的宽度和文本内容.请指教,如何解决这个问题.我正在使用Firefox 3.