@media (min-width: 1024px) {
    .height-3v {
        height: 460px
    }
    .height-2v {
        height: 260px
    }
    .height-1v {
        height: 230px
    }    
}
.height-100 {
    height: 100%
}
.height-50 {
    height: 50%
}
@media (max-width: 1023px) {
    .mob-200 {
        height: 200px
    }
    .mob-300 {
        height: 300px
    }
}