nav.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 2000;
  background-color: #fff;
}

#mainMenuNavbar.mobile-menu {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      overflow-y: auto;
      background-color: #fff; 
      z-index: 2000; 
    }

#mainMenuNavbar .close-menu-button {
      position: absolute;
      top: 10px;
      right: 10px;
      cursor: pointer;
    
    }

    #menuOverlay {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(0, 0, 0, 0.5); 
      z-index: 2000; 
    }

    @media (min-width: 992px) {
  #menuOverlay {
        display: none !important;
      }
    }

 #mainMenuNavbar.mobile-menu-open {
      margin-top: -118px; /
    }