By Forrest Smith - Drempd.com
A two-column setup, with a fixed width column on the left, and a fluid main column that fills out the rest of the space on the left:
<head>
<style>
.clear{
clear: both;
}
.col-secondary{
float: left;
width: 190px;
background: blue;
min-height: 100px;
}
.col-main{
margin-left: 200px;
box-sizing: border-box;
background: green;
min-height: 200px;
}
</style>
</head>
<body>
<div class="col-secondary">
Left column - fixed width
</div>
<div class="col-main">
Main column - fills the remaining space
</div>
<div class="clear"></div>
</body>