#m {  
    display: none;
}

#s {  
    display: none;
}

iframe {
    height: 100%!important;
}

.reader-container {
    width: 100%!important; 
    height: 100%!important; 
    background-color: rgb(53, 53, 53)!important;
    background-image: url(http://www.siscoma.com.ar/envesp/fondo.jpg)!important;
    background-position: 50%!important;
    background-size: 100% 100%!important;
}

.reader {
    background-image: url("http://www.siscoma.com.ar/envesp/publicaciones.png")!important; touch-action: pan-y!important;
}

    @media(max-width: 900px) {
        #l {
            display: none;
        }
        #m {
            display: block;
        }
    }

    @media(max-width: 700px) {
        #m {  
            display: none;
        }
        #s {
            display: block;
        }
    }


.embed-responsive {
    position: inherit!important;
  }

 .embed-responsive-16by9::before {
     padding-top: 0!important; 
}