.tophalf, .bottomhalf {
	height: 100vh;
}

.tophalf {
	background-color: black;
}

.navbar {
	height:  100vh;
	margin:  0px;
}

li {
	margin-top: 50px;
	margin-bottom: 50px;
	margin-left:  45px;
	text-align: center;
}

iframe {
	width:  100%;
	height: 100%;
	border:  0px;
}

.col-2, .col-10 {
	padding:  0px;
}