1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2 <html> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 5 <title>无标题文档</title> 6 <style type="text/css"> 7 html,body 8 { 9 height:100%; 10 margin:0; 11 } 12 body 13 { 14 -webkit-align-items:center; 15 -ms-flex-align:center; 16 align-items:center; 17 display:-webkit-flex; 18 display:flex; 19 } 20 </style> 21 </head> 22 23 <body> 24 <div style="height:500px; width:400px; background-color:#095;margin-left:auto;margin-right:auto;"> 25 aSDadasdASD 26 <BR/><BR/><BR/><BR/><BR/><BR/> 27 342532523543 28 <BR/><BR/><BR/><BR/><BR/><BR/> 29 </div> 30 </body> 31 </html>
原文：http://www.cnblogs.com/huashanqingzhu/p/7298426.html