* {
	margin: 0;
	padding: 0;
}

.toolbar {
	position: fixed;
	z-index: 999;
	top: 0;
	background: rgba(0,0,0,0.8);
	width: 100%;
}

.line div:first-child {
	position: fixed;
	left: -100px;
	top: 0;
	width: 2px;
	height: 100%;
	background: red;
}

.line div:last-child {
	position: fixed;
	left: 0;
	top: -100px;
	width: 100%;
	height: 2px;
	background: red;
}