Untitled

<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>JS Bin</title>
<!--[if IE]>
  <script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<style>
body,html { width: 100%; height: 100%; margin: 0; }

#main { width: 100%; height: 100%; background: red; position: relative; }
#top {
    height: 100px;
    width: 100%;
    background: yellow;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
}
#bottom {
    width: 100%;
    height: 50px;
    background: #ccc;
    position: absolute;
    bottom: 0;
    left: 0;
    z-index: 2;
}

#middle {
    z-index: 1;
    height: 100%;
    padding-top: 100px;
    padding-bottom: 50px;
    position: absolute;
    top: 0;
    left: 0;
    background: black;
    width: 100%;
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
}

#content_holder {
    position: relative;
    height: 100%;
}

#menu {
    background: aqua;
    width: 120px;
    height: 100%;
    position: absolute;
}
#content {
    display: inline-block;
    background: white;
    width: 100%;
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    padding-left: 120px;
    height: 100%;
}

</style>
</head>
<body>
    <div id="main">
    <div id="top"></div>
    <div id="middle">
        <div id="content_holder">
            <div id="menu">aaa</div>
            <div id="content">bbb</div>
        </div>
    </div>
    <div id="bottom"></div>
    </div>
</body>
</html>