.overlay { height: 100%; width: 0; position: fixed; z-index: 1; top: 0; left: 0; background-color: rgb(0,0,0); background-color: rgba(0,0,0, 0.9); overflow-x: hidden; transition: 0.5s; }
.overlay-content { position: relative; top: 25%; width: 100%; text-align: center; margin-top: 30px; }
	.overlay a { padding: 8px; text-decoration: none; font-size:8vw; color: #FE6A00; display: block; transition: 0.3s; }
	.overlay a:hover, .overlay a:focus { color: #FFFFFF; }
	.overlay .closebtn { position: absolute; top: 20px; right: 45px; font-size: 60px; }
	
.openbtn { font-size:10vw; }