效果：
代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
body {
margin: 0%;
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
td{
border: 1px solid #000000;
}
</style>
</head>
<body>
<table style="width: 100%;height: 100%;border-collapse: collapse;background-color: aqua">
<tr style="height: 20%;">
<td colspan="2">
</td>
</tr>
<tr>
<td style="width: 20%;">
</td>
<td >
</td>
</tr>
<tr style="height: 10%;">
<td colspan="2">
</td>
</tr>
</table>
</body>
</html>
标签：body,000000,布局,html,position,table From： https://www.cnblogs.com/lurenjia-bky/p/17136950.html