DIV居中

DIV居中

 1 < html >
 2 < head >
 3 < style >
 4#center{}{ background:red; color:#FFFFFF; font-size:12px; line-height:20px; position:absolute;left:expression((body.clientWidth-50)/2);top:expression((body.clientHeight-50)/2);width:80;height:20; text-align:center; display:none}
 5 </ style >
 6 </ head >
 7 < body >
 8 < div  id ="center" > 正在加载 </ div >
 9 </ body >
10 </ html >