<div class="header1">
		Header:
	</div>
		<div class="cont1">
			<div class="content1">Content</div>
			<div class="right1">Right Sidebar	</div>
			<div style="clear: both;"></div>
		</div>
	<div class="footer1">Footer</div>

.header1 {
	height: 150px;
	background: #FFE680;
}

.cont1 {
	width: 100%;
	overflow: hidden;
}

.content1 {
	background-color: #fcfcfc;
	padding: 0 20px;
	float:left;
	border:1px solid #000;
}

.right1 {
	float: right;
	width: 250px;
	background: #FFACAA;
}

.footer1 {
	height: 100px;
	background: #BFF08E;
}

.cont1 {position:relative;
	width: 100%;
	overflow: hidden;
}

.content1 {
	background-color: #fcfcfc;
	padding: 0 20px;
	position:absolute;
        left:0;
        right:250px;
	border:1px solid #000;
}
.right1 {
	float: right;
	width: 250px;
	background: #FFACAA;
}

.right1 {
	position:absolute;
           right:0px;
	width: 250px;
	background: #FFACAA;
}