html{overflow:hidden;background-color:#3e484e;font:normal 75% "Arial",Tahoma,Helvetica,sans-serif}
.fondo{	
	overflow:hidden;
    position: absolute;
    left: 50%;
    top: 50%;
    height: 610px;
    margin-top: -305px; /*610:2*/
    width: 1020px;
    margin-left: -510px; /*1020:2*/
	background:url(../img/fondo.jpg) no-repeat;
	padding:104px 0 0 150px
} 

.logos{width:100%}
.logos img.obra{margin-right:225px}
p.bv{padding:0 0 0 20px;margin:58px 0 0 0;background:url(../img/flecha.gif) 0 .15em no-repeat;color:#2e445b;width:690px}
.botones{margin:37px 0 0 100px}
.botones .boton{clear:both;float:left;width:650px;margin-bottom:19px}
.botones .boton img{float:left}
.botones .boton span{float:left;padding:17px 0 0 14px}
.botones .boton span a{color:#ff6c00;font-style:italic}
.botones .boton span a:hover{text-decoration:none}
.entrar{float:left;clear:both;margin:-5px 0 0 280px;padding:0}
* html .entrar{margin:-40px 0 0 140px}
*:first-child+html .entrar{margin:-40px 0 0 280px}
.entrar a{float:left;clear:both;background:url(../img/entrar_off.gif) no-repeat;width:157px;height:87px;text-decoration:none}
.entrar a:hover{background:url(../img/entrar_on.gif) no-repeat}