#signature-sec {
	width: 48px; height: 21px;
	float: right;
	margin: 15px;
	background-image: url(sec-publicidade.png);
	background-repeat: no-repeat;
	background-position: left top;
}
.white#signature-sec {background-position: -48px top;}
.black#signature-sec {background-position: -96px top;}
.red-sig #signature-sec {background-position: -241px top;}