text: function dropdown() {
    const elem = document.getElementById("navbarCollapse").className;
    if (elem.includes('show')) {
      document.getElementById("toggler").className = "navbar-toggler collapsed";
      document.getElementById("navbarCollapse").className = "navbar-collapse collapse";
    } else {
      document.getElementById("toggler").className = "navbar-toggler";
      document.getElementById("navbarCollapse").className = "navbar-collapse collapse show";
    }
  }
  