.navigation {
	margin:0;
	padding:0;
	line-height:0;
	border-bottom:2px solid #111;
}

.navigation > button {
	position:relative;
	display:inline-block;
	margin:0;
	padding:0;
	height:64px;
	text-align:center;
	background:transparent;
	border:none;
	border-left:2px solid #111;
	border-radius:0;
	box-shadow:none;
	cursor:pointer;
}
.navigation > button:first-of-type {
	border-left:none;
}
.navigation > button:hover {
	background:rgba(255,255,255,0.08);
}
.navigation > button:active {
	background:rgba(0,0,0,0.08);
}
.navigation > button.selected {
	background:rgba(0,0,0,0.15);
}
.navigation > button:focus {
	z-index:1;
}

.navigation > button img {
	margin:0;
	padding:0;
	pointer-events:none;
}