Html tr 元素周围的边框不显示？
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Border around tr element doesn't show?
提问by edi9999
It seems like Chrome/Firefox do not render borders on tr, but it renders the border if the selector is table tr td.
Chrome/Firefox 似乎不会在 上呈现边框tr，但如果选择器是 ，它会呈现边框table tr td。
How can I set a border on a tr ?
如何在 tr 上设置边框？
My try, which doesn't work:
我的尝试，这不起作用：
table tr {
border: 1px solid black;
}<table>
<tbody>
<tr>
<td>
Text
</td>
</tr>
</tbody>
</table>http://jsfiddle.net/edi9999/VzPN2/
http://jsfiddle.net/edi9999/VzPN2/
This is a similar question: Set border to table tr, works in everything except IE 6 & 7, but it seems to work everywhere except for IE.
这是一个类似的问题：将边框设置为表 tr，适用于除 IE 6 和 7 之外的所有内容，但它似乎适用于除 IE 之外的所有地方。
回答by raina77ow
Add this to the stylesheet:
将此添加到样式表：
table {
border-collapse: collapse;
}
The reason why it behaves this way is actually described pretty well in the specification:
规范中实际上很好地描述了它以这种方式行事的原因：
There are two distinct models for setting borders on table cells in CSS. One is most suitable for so-called separated borders around individual cells, the other is suitable for borders that are continuous from one end of the table to the other.
在 CSS 中设置表格单元格的边框有两种不同的模型。一种最适用于围绕单个单元格的所谓分离边框，另一种适用于从表格的一端到另一端连续的边框。
... and later, for collapsesetting:
...以及稍后，用于collapse设置：
In the collapsing border model, it is possible to specify borders that surround all or part of a cell, row, row group, column, and column group.
在折叠边框模型中，可以指定包围单元格、行、行组、列和列组的全部或部分的边框。
