实例代码：
<!doctype html >
<html>
<head>
<meta charset="utf-8">
<style type="text/css">
table,th,td {border:1px solid black;}
th,td{width:100px;text-align:center;padding:5px;}
td.bgred{background-color:red;}
td.font_blue{color:blue;}
</style>
</head>
<body>
<h1>表格背景颜色设置实例</h1>
<table >
<tr>
<th>属性</th>
<th>颜色</th>
<th>值</th>
</tr>
<tr>
<td>背景颜色<br />background-color</td>
<td>红色</td>
<td class="bgred">red</td>
</tr>
<tr>
<td>字体颜色<br/>color</td>
<td>蓝色</td>
<td class="font_blue">blue</td>
</tr>
</table>
</body>
</html>
运行效果：
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