.overlay {
	height: 0%;
	width: 100%;
	position: fixed;
	z-index: 1;
	top: 0;
	left: 0;
	background-color: rgb(0, 0, 0);
	background-color: rgba(0, 0, 0, 0.9);
	overflow-y: hidden;
	transition: 0.5s;
}

.overlay-content {
	position: relative;

	width: 100%;
	text-align: center;
	margin-top: 6rem;
}

.overlay a {
	padding: 8px;
	text-decoration: none;
	font-size: 1.0rem;
	color: #818181;
	display: block;
	transition: 0.3s;
}

.overlay a:hover,
.overlay a:focus {
	color: black;
}

.overlay .closebtn {
	position: absolute;
	top: 15px;
	right: 45px;
	font-size: 60px;
}

#hg:hover {
	color: red;
}

#tt:hover {
	color: blue;
}

@media screen and (max-height: 450px) {
	.overlay {
		overflow-y: auto;
	}

	.overlay .closebtn {
		font-size: 40px;
		top: 15px;
		right: 35px;
	}
}