#cabecera {border-bottom: 5px solid #c1c1c1;}
* html #cabecera {
	border-bottom: 5px solid #c1c1c1;
}

*:first-child+html #cabecera {
border-bottom: 5px solid #c1c1c1;
}
#cabecera h1 {background-image:url(/img/cab_empresa1.jpg);}
* html #cabecera h1 {background-image:url(/img/cab_empresa1.jpg);}
*:first-child+html #cabecera h1 {background-image:(/img/cab_empresa1.jpg);}