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Created October 15, 2016 10:35
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body {
height: 2000px;
.box {
height: 100px;
width: 100px;
margin-bottom: 10px;
.container {
position: absolute;
top: 50%;
margin-top: -50px;
width: 100%;
.bluebox {
background-color: blue;
margin: 0 auto;
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