body {
    background-color: #ffffff;
    height: 100vh;
    background-position: center center;
    background-repeat: no-repeat;
    background-size: contain;
    position: relative;
}

.container-fluid {
    background-image: url('../img/fondo-instrucciones-front.png');
    height: 100vh;
    background-position: center bottom;
    background-repeat: no-repeat;
    background-size: contain;
    position: absolute;
}

.bloques-back {
    background-image: url("../img/bottom-back.png");
    background-position: center top;
    background-repeat: no-repeat;
    background-size: cover;
    height: 30vh;
    width: 100vw;
    position: absolute;
    bottom: 0;
}


/* .contorno{
    border: solid 1px blue;
}   */

.contenedor-boton{
    text-align: center;
}

.contenedor-titulo{
    padding-top: 30px;
    text-align: center;;
}


.contenedor-titulo img{
    width: 100%;
}
.contenedor-cuadros img{
    width: 100%;
}

.contenedor-instrucciones{
    text-align: center;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.txt-instrucciones span{
    font-family: 'Balsamiq Sans', cursive;
    font-size: 1em;
}

@media (max-width: 800px){
    body{
        background-image: url("../img/fondo-bloques-movil.png");
        height: 100vh;
    }
    .bloques-back {
	    display: none;
    }
    .container-fluid {
	    background-image: initial;
	    height: 100vh;
	    background-position: center bottom;
	    background-repeat: no-repeat;
	    background-size: contain;
	    position: relative;
	}
}

@media (max-width: 700px){
    .contenedor-logo{
        text-align: center;
    }
}

@media (max-width: 700px){
    .contenedor-logo img{
        width: 20vw;
        position: fixed;
        left: 10px;
        top: 20px;
    }
}

@media (max-width: 800px){
    .contenedor-cuadros img{
        width: 15vw;
        position: fixed;
        right: 10px;
        top: 20px;
    }
}

@media (max-width: 800px){
    body{
        background-attachment: fixed;
        background-position: bottom;
    }
}


@media (max-width: 800px){
    .contenedor-titulo img{
        width: 75%;
    }
}

@media (max-width: 800px){
    .contenedor-titulo{
        text-align: center;
    }
}

@media (max-width: 800px){
    .txt-instrucciones span{
        font-size: 16px;
    }
}