text: // Sidenav
  const sidenav = document.querySelectorAll('.sidenav');
  M.Sidenav.init(sidenav);
  
  // Slider
  const slider = document.querySelectorAll('.slider');
  M.Slider.init(slider, {
      height: 200
  });
  
  // scrollspy
  const scrollspy = document.querySelectorAll('.scrollspy');
  M.ScrollSpy.init(scrollspy, {
      throttle: 10,
      scrollOffset: 50
  });