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const ctrl = new ScrollMagic.Controller();

    const _this = this;
    this.$block.each((i, $block) => {
      const scene = new ScrollMagic.Scene({
        triggerElement: $block,
        triggerHook: 1
      })
        .on('start', () => {
          // $($block).addClass(css.visible);
        })
        .on('leave', () => {
          // $($block).removeClass(css.visible);
        })
        .addTo(ctrl);
    });