高宽,绝对,垂直居中div
<!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"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>已知宽高度DIV垂直水平居</title> <style type="text/css"> <!-- .main{ position:absolute; top:50%; left:50%; width:821px; height:392px; margin:-196px 0 0 -410.5px; background:#C8EDFB} --> </style> </head> <body> <div class="main">已知宽高度DIV垂直水平居</div> </div> </body> </html>
说明：
width:821px; height:392px
margin的取值为高和宽的一半
高宽,绝对,垂直居中div
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