.linea_izq {
	border-left-width: 1px;
	border-left-style: solid;
	border-left-color: #999999;
	border-right-width: 1px;
	border-right-style: solid;
	border-right-color: #999999;
}
.linea_der {
	border-left-style: none;
	border-right-width: 1px;
	border-right-style: solid;
	border-right-color: #999999;
}