.leftColumn {
	float: left;
	width: 100%;
	display: inline-block;
}
.rightColumn {
	display: inline-block;
	float: left;
	width: 100%;
}
@media (min-width: 900px) {
	.leftColumn {
		width: 55%;
	}
	.rightColumn {
		width: 45%;
	}
}