<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> <style type="text/css"> .leftBox{ float:left; width:200px; height:100px; background: red; } .rightBox{ margin-left:200px; background:green; height:100px; } </style> </head> <body> <div class="leftBox"> </div> <div class="rightBox"> </div> </body> </html>
原文：http://www.cnblogs.com/enemy/p/3959834.html