knob {
	size: 3em;
	background-color: #f0f0f0;
	border-width: 1px;
	border-color: #f8f8f8;
	color: #ffaebc;
}

knob:hover {
	background-color: #e8e8e8;
}

knob:active {
	background-color: #e0e0e0;
}