body{
	width:960px;
	margin-left:auto;
	margin-right:auto;
}

.column1, .column2, .column3{
	float:left;
	width:300px;
	background-color:#efefef;
	margin:5px;
	padding:4px;
	border:1px solid black;	
	box-shadow:5px 5px 5px #676767;	
	height:450px;
	overflow:scroll;
}

.fix{
	clear:both;
}