var owl = $('.owl-carousel');
owl.owlCarousel({
    loop: false,
    center: false,
    nav: false,
    responsive: {
        0: {
            items: 1
        },
        600: {
            items: 2
        },
        1200: {
            items: 4
        }
    }
});
owl.on('mousewheel', '.owl-stage', function (e) {
    if (e.deltaY > 0) {
        owl.trigger('next.owl');
    } else {
        owl.trigger('prev.owl');
    }
    e.preventDefault();
});

// Go to the next item
$('.customNextBtn').click(function() {
    owl.trigger('next.owl.carousel');
})
// Go to the previous item
$('.customPrevBtn').click(function() {
    // With optional speed parameter
    // Parameters has to be in square bracket '[]'
    owl.trigger('prev.owl.carousel');
})



var owl_level = $('.owl-carousel-level');
owl_level.owlCarousel({
    loop: false,
    center: false,
    nav: false,
    responsive: {
        0: {
            items: 1
        },
        600: {
            items: 2
        },
        1200: {
            items: 6
        }
    }
});