text: (function setTheme() {
    document.documentElement.className = localStorage.getItem('theme') || '';
  })();
  
  function themeBtnText(theme) {
    return theme === 'dark' ? `<i class="fa fa-sun mr-2"></i>Light theme</a>` : `<i class="fa fa-moon mr-2"></i>Dark theme</a>`;
  }
  