function 1() {
	let firstChild = $('.carousel > div:first-child');
    firstChild.remove();
}

function 2() {
	$('.carousel').children().each(function() {
        let left = parseInt($(this).attr('style').slice(6, -2)) - 10;
        $(this).css('left', `${left}vw`);
    });
}

function previousSlide() {
        1();

        $('.carousel').append(firstChild);
        $('.carousel > div:last-child').attr('style', `left: ${$('.carousel').children().length * 10 - 10}vw`);

        2();
    }

    function nextSlide() {
        1();

        $('.carousel').prepend(lastChild);
        $('.carousel > div:first-child').attr('style', 'left: -10vw;');

        2();
    }