div#left-col-tips {
	float: left;
	width: 470px;
	margin: 40px 0 0 45px;
	padding-bottom: 200px; /* adds some space to the bottom */
}

div#right-col-tips {
	float: right;
	width: 300px;
	margin: 40px 100px 0 0;
	padding-bottom: 200px; /* adds some space to the bottom */
}