.izq { float:left; width: 300px; }
.izqs { float:left; width: 300px; text-decoration: underline; }
.der { float: right; width: 50px; text-align: right; font-weight: bold; color: #f60; }

#col-3 {
	margin-left: -10px;
	float:left; 
	width:350px;
}
#col-3 h3 {
	font-family: Arial, Verdana, Sans-Serif;
	font-size: 14px;
}
#col-4 {
	float:right; 
	width:350px;
}
#col-4 h3 {
	font-family: Arial, Verdana, Sans-Serif;
	font-size: 14px;
}