#intro {
    position: relative;
    min-height: 100vh;
    min-width: 100%;
    z-index: 2;
}

#intro #output {
    position: absolute;
}

#intro #ui {
    color: #fff;
    transition: opacity 0.4s ease-out;
    position: absolute;
    height: 100%;
    width: 100%;
    display: flex;
    flex-flow: column;
    justify-content: center;
    align-items: center;
    z-index: auto;
}

/*#intro + section {
    margin-top: 100vh;
    margin-bottom: 0;
}*/

#slider {
    min-height: 100%;
}


@media only screen and (max-width: 768px) {
    #intro  {
        min-height: 50vh;
        position: relative;
    }

/*    #intro + section {
        margin-top: 0;
    }*/
}