@media (max-width: 768px) {
  #mobileMenuToggle {
    display: block;
    background: none;
    border: none;
    font-size: 24px;
    padding: 10px;
    margin: 10px;
    cursor: pointer;
  }

  #mobileSideMenu {
    display: block;
    position: fixed;
    top: 0;
    left: -250px;
    width: 250px;
    height: 100%;
    background: white;
    z-index: 9999;
    transition: left 0.3s ease;
    overflow-y: auto;
    box-shadow: 2px 0 5px rgba(0,0,0,0.2);
  }

  #mobileSideMenu.open {
    left: 0;
  }

  #mobileSideMenu .closeBtn {
    display: block;
    padding: 15px;
    font-size: 24px;
    text-align: right;
    cursor: pointer;
  }

  #mobileSideMenu ul {
    list-style: none;
    padding: 0;
    margin: 0;
  }

  #mobileSideMenu ul li {
    border-bottom: 1px solid #eee;
    padding: 15px;
    font-size: 16px;
  }
}

@media (min-width: 769px) {
  #mobileMenuToggle,
  #mobileSideMenu {
    display: none !important;
  }
}