#cbtrr{width:100%;}
.cbtrr1{background-image:url(http://www.terra.es/nav/cabeceras/national_geographic/img_cab/cbtrr_bg1.gif);background-repeat:no-repeat; width:14px}
.cbtrr2{height:83px;background-image:url(http://www.terra.es/nav/cabeceras/national_geographic/img_cab/cbtrr_bg2.gif);background-repeat:repeat-x;}
.cbtrr4{float:right;width:267px;background-image:url(http://www.terra.es/nav/cabeceras/national_geographic/img_cab/cbtrr_gr1.gif);background-repeat:no-repeat;} 
.cbtrrh1 {margin:0 0 0 71px;background-image:url(http://www.terra.es/nav/cabeceras/national_geographic/img_cab/cbtrr_tit.gif);background-repeat:no-repeat;width:196px;height:83px;} 
.cbtrrh1 a{display:block;width:196px;height:83px;}
/* estilos personalizacion rama */
.cbtrr5{clear:left;height:19px;padding-top:2px;font-family:Verdana,Arial,sans-serif;font-size:10px;color:#000;} 
a.cbtrr6{color:#000;text-decoration:underline;} a.cbtrr6:hover{color:#000;text-decoration:underline;} a.cbtrr6:visited{color:#000;text-decoration:underline;}