<div></div>

body {
	background: linear-gradient(to right bottom, #457289, #51A99B);
	min-height: 100vh;
}
div {
	max-width: 1100px;
	margin: 0 auto;
	height: 100vh;
	background: linear-gradient(to right, #51869D 1px, transparent 1px, transparent 99px) left / 100px 100% repeat-x;
}