#cabecera{
   width: 100%; 
   background: url(../images/CabeceraLogo1024.png)   no-repeat;
        background-size: cover;
        -moz-background-size: cover;
        -webkit-background-size: cover;
        -o-background-size: cover;

}
h1#logo a{  
display: none; 
}
        
.sticky-in #cabecera{
    width: 100%;
    height: 75px;
 }
 
@media (max-width:580px){
#cabecera{  
   background: url(../images/CabeceraLogo480.png) no-repeat;    
}
}
@media (max-width:480px){
#cabecera{
  
   background: url(../images/CabeceraLogo480.png) no-repeat;    
}
}