HTML
<div class="wrapper">
<div class="header"></div>
<div class="sidebar"></div>
<div class="content"></div>
</div>
CSS
* {
margin: 0;
padding: 0;
}
body,html {
height: 100%;
overflow: hidden;
}
.header,
.sidebar,
.content {
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
}
.header {
height:100px;
background: #f08a00;
}
.sidebar {
top: 100px;
width: 20%;
background: #c00000;
}
.content {
top: 100px;
left: 20%;
background: #ccc;
}
