我正在向仍在使用基于表格的布局的站点添加基于 css 的选项卡导航。当我将标签列表放在 td 中时,您可以看到一个视觉“间隙”。如果我在 td 中放置一个宽度为 100% 的空 div,那么我的选项卡列表将正确显示。(它在桌子外也可以正常工作。)
为什么 div 使选项卡布局正确,有没有更好的方法可以在不添加无内容 div 的情况下使它们正确布局?
这是我的测试用例:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head><title>
Strange gap
</title>
<style type ="text/css" >
/* stolen from http://unraveled.com/publications/css_tabs/, then hacked to death */
ul.tabnav { /* general settings */
border-bottom: 1px solid #cbcbcd; /* set border COLOR as desired */
list-style-type: none;
padding: 3px 10px 3px 10px; /* THIRD number must change with respect to padding-top (X) below */
margin: 3px 0px 0px 0px; /* Right on top of the next row */
}
ul.tabnav li { /* do not change */
display: inline;
}
ul.tabnav li.current { /* settings for selected tab */
border-bottom: 1px solid #fff; /* set border color to page background color */
background-color: #fff; /* set background color to match above border color */
/* border: solid 1px red; */
}
ul.tabnav li.current a { /* settings for selected tab link */
background-color: #fff; /* set selected tab background color as desired */
color: #000; /* set selected tab link color as desired */
position: relative;
top: 1px;
padding-top: 4px; /* must change with respect to padding (X) above and below */
}
ul.tabnav li a { /* settings for all tab links */
padding: 3px 4px; /* set padding (tab size) as desired; FIRST number must change with respect to padding-top (X) above */
border: 1px solid #cbcbcd; /* set border COLOR as desired; usually matches border color specified in #tabnav */
background-color: #cbcbcd; /* set unselected tab background color as desired */
color: #666; /* set unselected tab link color as desired */
margin-right: 0px; /* set additional spacing between tabs as desired */
text-decoration: none;
border-bottom: none;
}
/* end css tabs */
</style>
</head>
<body>
<table>
<tr>
<td>
I'm making some tab navigation with css. I copied the code
from <a href=" http://unraveled.com/publications/css_tabs/"> http://unraveled.com/publications/css_tabs/</a>,
and hacked it up. There's an odd behavior that I see on IE (v 7).
There's a gap below.
</td>
</tr>
<tr>
<td>
<ul class="tabnav">
<li class="current"><a >Home</a></li>
<li ><a >Search</a></li>
</ul>
</td>
</tr>
<tr>
<td>
No gap below this
</td>
</tr>
<tr>
<td >
<div style="width: 100%"><!-- This div forces the menu to render properly in IE7. I don't know why --></div>
<ul class="tabnav">
<li class="current"><a >Home</a></li>
<li ><a>Search</a></li>
</ul>
</td>
</tr>
<tr>
<td>
why? The difference is the presence of a div with style="width: 100%" on it in the second
case. I don't know why this fixes the rendering; I'd like a better way to do it without adding an
extra empty div. This page should be in standards mode (or at least non-quirks mode).
</td>
</tr>
</table>
For comparison, it works fine outside of a table:
<ul class="tabnav">
<li class="current"><a >Home</a></li>
<li ><a >Search</a></li>
</ul>
</body>
</html>
我现在已经将它交叉发布到我的博客:培根驱动编码:为什么当 UL 单独在 TD 中而不是有一个额外的空 DIV 时,IE 中的布局会发生变化?,带有屏幕截图,以便人们可以看到我在说什么。
这是屏幕截图: