<html>
<head>
<meta charset="UTF-8">
<title></title>
<title>Web page effects - window effects - the effect of darkening the background of the web page after the pop-up window</title>
<meta http-equiv="content-Type" content="text/html;charset=gb2312">
<style type="text/css">
.black_overlay {
display: none;
position: absolute;
top: 0%;
left: 0%;
width: 100%;
height: 100%;
background-color: black;
z-index: 1001;
-moz-opacity: 0.8;
opacity: .80;
filter: alpha(opacity=80);
}
.white_content {
display: none;
position: absolute;
top: 25%;
left: 25%;
width: 50%;
height: 50%;
padding: 16px;
border: 3px solid orange;
background-color: white;
z-index: 1002;
overflow: auto;
}
</style>
</head>
<body>
<a href="javascript:void(0)" onclick="document.getElementById('light').style.display='block'; document.getElementById('fade').style.display='block'">
Click here to open the window</a>
<div id="light" class="white_content">
<a href="javascript:void(0)" onclick="document.getElementById('light').style.display='none';document.getElementById('fade').style.display='none'">
Close</a>
<br>Window Contents
</div>
<div id="fade" class="black_overlay"></div>
</body>
</html>
The background darkening effect when the frame pops up
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