.sticky-libro-desktop {
    display: block;
    position: fixed;
    width: 180px;
    height: 254px;
    top: calc(100% - 270px);
    left: calc(100% - 200px);
    background-image: url(../../images/portada-sticky.png);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    cursor: pointer;
    z-index: 9999;
    border-radius: 10px;
}

.titulo-sticky-desktop {
    display: block;
    margin-top: -70px;
    font-size: 20px;
    color: #ffffff;
    text-align: center;
    font-weight: bold;
    -webkit-text-stroke: 1px black;
}

.sticky-libro-movil {
    display: none;
}

.titulo-sticky-movil {
    display: none;
}

@media (max-width: 767px) {
    .sticky-libro-desktop {
        display: none;
    }
    
    .titulo-sticky-desktop {
        display: none;
    }

    .sticky-libro-movil {
        display: block;
        position: fixed;
        width: 310px;
        height: 80px;
        top: calc(100% - 90px);
        left: calc(50% - 155px);
        background-color: #000000aa;
        border-radius: 10px;
        z-index: 9999;
        padding: 5px;
    }
    
    .titulo-sticky-movil {
        display: block;
        color: #ffffff;
        text-align: center;
        margin-bottom: 0;
    }

    .boton-novela {
        width: 120px;
        height: 30px;
        margin: 0 auto;
        margin-top: 10px;
        background-color: #ffffff;
        color: #000000;
        border-radius: 25px;
        padding-top: 4px;
        text-align: center;
    }
}