#window {
opacity:0;-ms-opacity:0;-moz-opacity:0;visibility:hidden;
width: 400px;  
height: 300px;  
position: absolute;
margin-left: 10%;
margin-top: 3%;
box-shadow: 0 5px 25px rgba(0,0,0,.1); 
z-index:9999;
}
#window2 #window #bios {
padding: 20px 10px 10px 10px;
}
#window2 {
opacity:0;-ms-opacity:0;-moz-opacity:0;visibility:hidden;
width: 400px;  
height: 300px;  
position: absolute;
margin-left: 8%;
margin-top: 3%;
box-shadow: 0 5px 25px rgba(0,0,0,.1); 
z-index:9999;
}