.fondo {
visibility:hidden;
position: fixed;
* position:absolute;
top:0px;
left:0px;
right:0px;
width: 100%;
* with:2000px;
height: 100%;
* height:1000px;
* margin: 0;
* padding:0;
z-index: 9;
float: left;
background-color:#e0f2fa;
opacity:0.8;
* overflow:hidden;
filter:alpha(opacity=85)
 
}
.cuerpo {
visibility:visible;
position: absolute;
top:0px;
left:0px;
width: 100%;
height: 100%;
z-index: 2;
text-align: center;
}
.intrusivo {
visibility:hidden;
position: fixed;
* position:absolute;
z-index: 15;
top:0px;
left:0px;
width: 100%;
height: 100%;
* height: 1000px;
text-align: center;
 float: left;
 bottom: auto;
 vertical-align: baseline;
}
.flash {
visibility:hidden;
z-index: 14;
width: 810px;
margin: 0 auto;
}