@media screen and (max-width: 550px) {

    html,
    body {
        overflow-x: hidden !important;
    }

    #previsualizacion-condiciones {
        height: 50vh !important;
        width: 90% !important;
        margin: auto !important;
    }

    #control-a,
    #control-b {
        padding-left: 0 !important;
        padding-right: 0 !important;
        padding-top: 10px !important;
        padding-bottom: 10px !important;
        text-align: center !important;
    }

    #control-a .btn {
        padding-left: 0 !important;
        padding-right: 0 !important;
    }

    #control-b .btn {
        width: 47% !important;
    }

    #num-slider-activo {
        display: block;
        margin-bottom: .5em !important;
    }

}