标签：idt 元素 utf-8 pos tle document lan char blog
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <style> .bigBox{ width: 200px; height: 200px; border: 1px solid #ccc; position: relative; } .smailBox{ width: 50px; height: 50px; border: 1px solid #ccc; position: absolute; margin: auto; left: 0; right: 0; top: 0; bottom: 0; } </style> </head> <body> <div class="bigBox"> <div class="smailBox"></div> </div> </body> </html>
不用任何计算。。。
标签：idt 元素 utf-8 pos tle document lan char blog
原文地址：http://www.cnblogs.com/vicii/p/6223172.html
