html表格设置宽度的方法：首先创建一个HTML示例文件；然后通过table创建一个表格；最后通过设置table的width属性来设置宽度即可。
本文操作环境：Windows7系统、HTML5版，DELL G3电脑
html表格怎么设置宽度？
width 属性规定表格的宽度。
如果没有设置 width 属性，表格会占用需要的空间来显示表格数据。
从实用角度出发，最好不要规定宽度，而是使用 CSS 来应用宽度。
浏览器支持
由于不会在普通浏览器中产生任何视觉效果，很难判断浏览器是否支持 summary 属性。
语法
<body width="value">
属性值
pixels 设置以像素计的宽度（例子：width="50"）。
% 设置以包含元素的百分比计的宽度（例子：width="50%"）。
示例：
带有 400 像素宽度的表格：
<html>
<body>
<table border="1" width="400">
<tr>
<th>Month</th>
<th>Savings</th>
</tr>
<tr>
<td>January</td>
<td>$100</td>
</tr>
<tr>
<td>February</td>
<td>$80</td>
</tr>
</table>
</body>
</html>效果：
推荐学习：《HTML视频教程》
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