@media (min-width:768px) {
    #main-slogan {
        min-height: 270px;   
    }
}


@media (max-width:767px) {
    #main-slogan {
        min-height: 135px;   
    }
}



@media (min-width:768px){
    .video-size {
        height: 980px;
    }
}

@media (max-width:767px){
    .video-size {
        height: 500px;
    }
}