国产精品无码久久久久久,精品久久久久久国产,波多野结衣中文字幕一区二区三区,久久久亚洲欧洲日产国码农村

CSS讓div背景透明

2016/10/10 8:38:53   閱讀:1747    發(fā)布者:1747

div背景透明樣式:

樣式代碼:

.alert{filter:alpha(opacity=100); /* IE */ -moz-opacity:1.0; /* Moz + FF */

opacity: 1.0; height:300px; width:500px; background:#ccc; left:50%; top:50%;margin-top:-150px;
margin-left:-250px;position:absolute;z-index:99; text-align:center; padding:20px;}

使用方法:

<div class=”alert”>

背景透明

</div>

html代碼:

<!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>亞網(wǎng)互聯(lián)</title> 
<style type="text/css"> 
.alert 
{filter:alpha(opacity=100); /* IE */ -moz-opacity:1.0; /* Moz + FF */ opacity: 1.0; height:300px;
width:500px; background:#ccc; left:50%; top:50%;margin-top:-150px;margin-left:
-250px;position:absolute;z-index:99; text-align:center; padding:20px} </style> </head> <body> <div class="alert">亞網(wǎng)互聯(lián)</div> </body> </html>