<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
.bg{
position: fixed;
top:0;
left: 0;
right: 0;
bottom: 0;
width: 100%;
overflow: auto;
height: 100%;
background:rgba(0,0,0,0.5);
}
.bg > .content-wrapper{
height:auto;
min-height:100%;
}
.content{
padding-bottom:150px;
}
.footer{
text-align: center;
position:relative;
margin-top:-150px;
height:150px;
}
/* .clearfix{
display:inline-block;
} */
/* .clearfix:after{
content:"";
display:block;
height:0;
clear:both;
visibility: hidden;
} */
</style>
</head>
<body>
<div class="bg">
<div class="content-wrapper clearfix">
<div class="content">
content
</div>
</div>
<div class="footer">X</div>
</div>
</body>
</html>
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