.btn {
	display: flex; align-items: center; justify-content: center;
	font: inherit;
	border: none;
	background: none;
	height: 25px;
	min-width: 25px;
	padding: 5px;
	margin: 0;
	border-radius: 4px;
	color: #0f0;
	background: #111;
}
.btn:hover, .btn:focus {
	background: #333;
}