How to enlarge Slick slider?

Question

css

On the site, almost at the very bottom, there is a slick slider, but it is not possible to evenly enlarge the slides:
aquaboxmoika.ru/index.html

Answer 1

<script type="text/javascript">
    $(document).on('ready', function() {
      $(".regular").slick({
        dots: true,
        infinite: true,
        slidesToShow: 3,
        slidesToScroll: 3
      });
      $(".center").slick({
        dots: true,
        infinite: true,
        slidesToShow: 3,
        slidesToScroll: 3,
      });
      $(".variable").slick({
        dots: true,
        infinite: true,
        variableWidth: true
      });
    });
  </script>

Answer 2

horror