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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www./TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www./1999/xhtml"> <head> <style type="text/css"> div.container { margin:0 auto; /* 注意：如果文件头上的 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www./TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www./1999/xhtml"> 内容没有，仅仅有一个<html>标记的话，则实现不了容器的居中。 */ width:80%; border:1px solid gray; line-height:150%; background-color:#33FFCC; } div.header,div.footer { padding:0.5em; color:white; background-color:gray; clear:left; } h1.header { padding:0; margin:0; } div.left { float:left; width:160px; padding:1em; border:1px solid red; background-color:green; } div.content { width:60%; border:1px solid gray; background-color:#CC6666; padding:1em; float:left; } </style> </head> <body> <div class="container"> <div class="header"><h1 class="header">W3School.com.cn</h1></div> <div class="left"><p>"Never increase, beyond what is necessary, the number of entities required to explain anything." William of Ockham (1285-1349)</p></div> <div class="content"> <h2>Free Web Building Tutorials</h2> <p>At W3School.com.cn you will find all the Web-building tutorials you need, from basic HTML and XHTML to advanced XML, XSL, Multimedia and WAP.</p> <p>W3School.com.cn - The Largest Web Developers Site On The Net!</p></div> <div class="footer">Copyright 2008 by YingKe Investment.</div> </div> </body> </html>
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