Fixed / Fluid / Fixed

by helpinspireme

HTML

<div class="contentShell">
<div class="centerRail">Center</div>
</div>

<div class="leftRail">Left</div>

<div class="rightRail">Right</div>

CSS

.contentShell{
float: left;
width: 100%;
}

.centerRail{
margin: 0 200px 0 230px;
}

.leftRail{
float: left;
width: 230px;
margin-left: -100%;
background: #C8FC98;
}

.rightRail{
float: left;
width: 200px;
margin-left: -200px;
background: #FDE95E;
}