$(document).ready(function(){

    $('select').formSelect();

  });

  $(document).ready(function(){

    $('.collapsible').collapsible();

  });

    let elem = document.querySelector('.collapsible.expandable');

    let instance = M.Collapsible.init(elem, {accordion: false });

    document.addEventListener('DOMContentLoaded', function() {

    let elems = document.querySelectorAll('select');

    let instances = M.FormSelect.init(elems);

  });