position:absolute & default z-index

by roskoshinsky

HTML

<div class="owner" >
    <div class="box red" ></div>
    <div class="box blue" ></div>
    <div class="box green" ></div>
</div>
<div class="box yellow" ></div>

CSS

.owner {position:absolute; top:0px; left:0px; width:100%; height:100%;}
.box {position:absolute; width:100px; height:100px;}
.red {top:20px; left:20px; background-color:red;}
.blue {top:60px; left:60px; background-color:blue;}
.green {top:100px; left:100px; background-color:green;}
.yellow {top:50px; left:50px; background-color:yellow;}