html学习文档-12、 HTML布局<span>
12.1 HTML5 语义元素
header |
定义文档或节的页眉 |
nav |
定义导航链接的容器 |
section |
定义文档中的节 |
article |
定义独立的自包含文章 |
aside |
定义内容之外的内容（比如侧栏） |
footer |
定义文档或节的页脚 |
details |
定义额外的细节 |
summary |
定义 details 元素的标题 |
12.2 布局实例
<html>
<head>
<style>
#header {
background-color:black;
color:white;
text-align:center;
padding:5px;
}
#nav {
line-height:30px;
background-color:#eeeeee;
height:300px;
width:100px;
float:left;
padding:5px;
}
#section {
width:350px;
float:left;
padding:10px;
}
#footer {
background-color:black;
color:white;
clear:both;
text-align:center;
padding:5px;
}
</style>
<head/>
<body>
<div id="header">
<h1>City Gallery</h1>
</div>
<div id="nav">
London<br>
Paris<br>
Tokyo<br>
</div>
<div id="section">
<h1>London</h1>
<p>
London is the capital city of England. It is the most populous city in the United Kingdom,
with a metropolitan area of over 13 million inhabitants.
</p>
<p>
Standing on the River Thames, London has been a major settlement for two millennia,
its history going back to its founding by the Romans, who named it Londinium.
</p>
</div>
<div id="footer">
Copyright W3School.com.cn
</div>
</body>
<html/>
12.3 使用表格<table>的 HTML 布局
<table> 元素不是作为布局工具而设计的。<table> 元素的作用是显示表格化的数据。使用 <table> 元素能够取得布局效果，因为能够通过 CSS 设置表格元素的样式：
<head>
<style>
table.lamp {
width:100%;
border:1px solid #d4d4d4;
background-color:yellow;
color:blue;
font-size:20;
}
table.lamp th, td {
padding:10px;
}
table.lamp td {
width:40px;
}
</style>
<head/>
<body>
<table class="lamp">
<tr>
<th>
<img src="/images/lamp.jpg" alt="Note" style="height:32px;width:32px">
</th>
<td>
The table element was not designed to be a layout tool.
</td>
</tr>
<tr>
<th>12345 </th>
<td>
The table element was not designed to be a layout tool.
</td>
</tr>
</table>
</body>
