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Home > Web Front-end > HTML Tutorial > 来帮我看看这个html 表格边框颜色怎么弄_html/css_WEB-ITnose

来帮我看看这个html 表格边框颜色怎么弄_html/css_WEB-ITnose

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Release： 2016-06-21 09:39:59
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<!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><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>无标题文档</title></head><style type="text/css"><!--.news table td{border:1px solid #F00;}.bac table td{border:1px solid #00F;}--></style><body><table width="658" height="317" border="0" cellspacing="0px" class="bac" style="border-collapse:collapse" align="center" id="t1">  <tr>    <td>1</td>    <td>2</td>  </tr>  <tr>    <td colspan="2"><table width="50%" border="0" align="center" class="news" id="t2">      <tr>        <td>3</td>        <td>4</td>        <td>5</td>      </tr>      <tr>        <td> </td>        <td> </td>        <td> </td>      </tr>      <tr>        <td> </td>        <td> </td>        <td> </td>      </tr>    </table></td>  </tr></table></body></html>
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两个表格颜色不一样，为何只有里面那个框显示颜色，我要两个都显示！谢谢！


回复讨论(解决方案)

楼主，你理解的CSS的优先级有误啊，把你的CSS代码改成如下就可以了： 

    <style type="text/css">        table.bac td{            border:1px solid #00f;        }        table.news td{            border:1px solid #F00;        }    </style>
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或者直接用ID选择器，如下： 
     <style type="text/css">        #t1 td{            border:1px solid #00f;        }        #t2 td{            border:1px solid #F00;        }    </style>
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来帮我看看这个html 表格边框颜色怎么弄
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