* {
	box-sizing: border-box;
	padding: 0;
	margin: 0;
	font-family: monospace;
	font-size: 1.2rem;
	letter-spacing: 0.1rem;
}

html, body {
	height: 100%;
	margin: 0;
	overflow: hidden;
}

body{
	display: flex;
	flex-direction: column;
}

.button-list {
	height: 100%;
	width: 100%;
	display: flex;
	flex-direction: column;
	flex-wrap: nowrap;
	align-items: stretch;
}

.button-element {
	height: 100%;
	width: 100%;
	flex-grow: 1;
	cursor: pointer;
	padding: 0.75rem;
	text-decoration: none;
	border: 1px solid black;
}

.button-element:visited{
	color: black;
}

.button-content {
	opacity: 0 !important;
	color: white;
	font-size: 3rem;
	font-weight: bolder;
	opacity: 1;
	width: 100%;
	height: 100%;
	display: flex;
	align-items: center;
	justify-content: center;
	background: rgba(10,20,30,0.5);
	border-radius: 1rem;
	padding: 1rem;
	transition: 200ms;
	text-align: center;
}

.button-content:hover{
	opacity: 1 !important;
}

#btnDrive {
	background-image: url('img_drive_un.jpg');
	background-size: cover;
	background-position: center;
	transition: background-image 0.4s ease-in-out;
}

#btnDrive:hover {
	background-image: url('img_drive.jpg');
}

#btnPhoto {
	background-image: url('img_photo_un.jpg');
	background-size: cover;
	background-position: center;
	transition: background-image 0.4s ease-in-out;
}

#btnPhoto:hover {
	background-image: url('img_photo.jpg');
}

#btnDsm {
	background-image: url('img_default_un.jpg');
	background-size: cover;
	background-position: center;
	transition: background-image 0.4s ease-in-out;
}

#btnDsm:hover {
	background-image: url('img_default.jpg');
}

@media(hover: none){
	.button-content {
		opacity: 1 !important;
	}

	#btnDrive {
		background-image: url('img_drive.jpg');
	}

	#btnPhoto {
		background-image: url('img_photo.jpg');
	}

	#btnDsm {
		background-image: url('img_default.jpg');
	}
}