text: function handleNav() {
    const nav = document.getElementById("main-nav");
    const hamburger = document.getElementById("hamburger");
  
    if (!nav.classList.contains("main-nav-active")) {
      nav.classList.add("main-nav-active");
      hamburger.classList.add("hamburger-active");
    } else {
      nav.classList.remove("main-nav-active");
      hamburger.classList.remove("hamburger-active");
    }
  }
  