#matrix {
	empty-cells:show;		
	background-color: #000;
	padding:0;
}
#matrix tr td {
	padding: 0;
	width: 20px!important;
	height: 20px!important;
	background-color: #666;
	-moz-border-radius: 13px;
	border-radius: 13px;
}
#matrix tr td.gap {
	width: 1px!important;
	height: 1px!important;
	background-color: transparent;
	-moz-border-radius: 0;
	border-radius: 0;
}
#matrix tr td.active {
	background-color: #ff0000 !important;
}
button {
	margin-right: 10px;
	float: left;
}