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<title>Document</title>
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width: 10px;
height: 10px;
background: red;
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var aDiv = document.getElementsByTagName('div');
var i = 0;
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aDiv[i].style.left = aDiv[i - 1].style.left;
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<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
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