ul,ol{
    position: absolute;
    display: flex;
    list-style: none;
    width: 100%;
    height: 100%;
}
.list-x, .list-xy{
    flex-direction: row;
}
.list-y, .list-yx{
    flex-direction: column;
}

@media screen and (max-aspect-ratio: 4/3) {
    .list-xy{
        flex-direction: column;  
    }
    .list-yx{
        flex-direction: row;
    }
}