.contenido-video {
    z-index: 9;
    width: 100%;
}

.header-inicio {
    position: relative;
    min-height: 100vh;
    width: 100%;
    overflow: hidden;
}

.video-home {
    position: absolute;
    min-width: 100vw;
    min-height: 100vh;
    z-index: 0;
}

.flechita-abajo {
    width: 100%;
    left: 0;
    bottom: 80px;
}

#header-internas .imagen-interna {
    min-height: 80vh;
}

@media (max-width: 576px)
{

    #header-internas .imagen-interna {
        min-height: 45vh;
    }

}

@media  (min-width: 577px) and (max-width: 767px)
{

    #header-internas .imagen-interna {
        min-height: 50vh;
    }

}