JSFiddle - React, Tailwind, and code Playground

by norsewulf

HTML

<header>
    header 'n' stuff
</header>
<br clear="all">
<div id="main">

    <div class="left">        
    <p>it doesn't matter how big the height of this element is. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. </p>
    </div>
    <div class="mid">
        <div class="stretch">                
            this needs to stretch 100% height of div.mid, which needs to stretch 100% height of div#main
        </div>
    </div>
    <div class="right">
    <p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p>
    </div>
<br clear="all">
</div>

<footer>
    footer
</footer>

CSS

#main {
    background: green;
}

.left {
    width:30%;
    float:left;
}

.mid {
    width:40%;
    height: 100%;
    float:left;
    position:relative;
    background:grey;
}

.stretch {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    background: blue;
}

.right {
    width:30%;
    float:left;
}