我希望DIV可以像TABLE一样广泛，但是由于浏览器的行为是一致的，我怀疑这是一个功能而不是一个bug。
有趣的是，如果DIV设置为float：left，it does grow as wide as the table。
任何解释？
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html>
<head>
<title>Wide Table</title>
<style>
#container {
background-color:blue;
/* float:left;*/
}
</style>
</head>
<body>
<div id="container">
<table >
<tr id="tr">
<td>Table Cell</td><td>Table Cell</td><td>Table Cell</td><td>Table Cell</td><td>Table Cell</td><td>Table Cell</td><td>Table Cell</td><td>Table Cell</td><td>Table Cell</td><td>Table Cell</td><td>Table Cell</td><td>Table Cell</td><td>Table Cell</td><td>Table Cell</td><td>Table Cell</td><td>Table Cell</td><td>Table Cell</td><td>Table Cell</td><td>Table Cell</td><td>Table Cell</td>
</tr>
</table>
</div>
</body>
</html>
解决方法
所以，#container的宽度为< body>然后< table> #container内部的#container外部溢出。如果你把溢出：隐藏在#container上，你将剪辑< table>，overflow-x：auto; #container上会添加一个滚动条。
更新：就浮动元素而言，CSS3 spec有这样的说法：
The used value of ‘width’ is the computed value,unless that is ‘auto’,when used value is the shrink-to-fit width.
默认宽度为auto，因此shrink-to-fit是：
Calculation of the shrink-to-fit width is similar to calculating the width of a table cell using the automatic table layout algorithm. Roughly: calculate the preferred width by formatting the content without breaking lines other than where explicit line breaks occur,and also calculate the preferred minimum width,e.g.,by trying all possible line breaks.
您的< table>中没有任何换行符所以浮动的#container将占据其< table>的整个宽度。儿童。