// Mobile nav toggle for the hamburger icon.
// Only defines myFunction() if it isn't already provided by
// your existing js/scripts.js or js/main.js — safe to include
// even if one of those files already has its own version.
if (typeof myFunction === 'undefined') {
  window.myFunction = function () {
    var nav = document.getElementById('myTopnav');
    if (nav) {
      nav.classList.toggle('responsive');
    }
  };
}