<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
#aa{
background: #00c806;
float: left;
margin-top: 10px;
left: 20px;
right: 98px;
position: absolute;
80px;
padding: 8px;
z-index: -100;
}
#new {
opacity:0.4;
}
</style>
</head>
<body>
<div id="aa">点我发大财</div>
<IFRAME SRC="https://ide.codemao.cn/" width="100%" height="100%" id="new"> </IFRAME>
</body>
</html>
页面: