gistfile1.txt

  var $featured_nav = document.querySelector('.post--featured > nav');
  if ($featured_nav) {

    $featured_nav.addEventListener('scroll', function() {
      var fw = $featured_nav.scrollWidth;
      var fc = $featured_nav.scrollLeft;
      var fm = $featured_nav.clientWidth;

      $featured_nav.classList.remove('__notscrolled');

      if (fc > (fw - fm - 40)) {
        $featured_nav.classList.remove('__right');
        $featured_nav.classList.add('__left');
      }
      else if (fc == 0) {
        $featured_nav.classList.remove('__left');
        $featured_nav.classList.add('__right');
      }
      else {
        $featured_nav.classList.add('__right');
        $featured_nav.classList.add('__left');
      }
    })
  }