<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>

:root {
	--dark: #263e4a;
	--light: #5c95b1;
}

body {
	height: 100vh;
	width: 100vw;
	overflow: hidden;
	margin: 0;
	background: var(--dark);
}

div {
	width: 100vw;
	height: 10vh;
	background: repeating-linear-gradient(
		90deg,
		var(--dark) 5%,
		var(--light) 5%,
		var(--light) 10%,
		var(--dark) 10%,
		var(--dark) 15%,
		var(--light) 15%,
		var(--light) 20%,
		var(--dark) 20%,
		var(--dark) 25%,
		var(--light) 25%
	);
	border-top: 2px solid var(--dark);
	border-bottom: 2px solid var(--dark);
	position: relative;
	margin-left: 1%;
	box-sizing: border-box;
}

div:nth-child(2),
div:nth-child(6),
div:nth-child(10),
div:nth-child(4),
div:nth-child(8) {
	margin-left: 2.5%;
}

div:nth-child(3),
div:nth-child(7) {
	margin-left: 4%;
}

div:before {
	content: "";
	background: var(--light);
	position: absolute;
	left: -5%;
	width: 5%;
	height: 100%;
}