@media (max-width: 768px) {
  a {
    text-decoration: none;
    font-size: 1.3rem;
  }

  ul {
    width: 100%;
    height: 20%;
    list-style: none;
    padding: 0;
    margin: 0;
  }

  li {
    margin-bottom: 1rem;
    position: relative;
  }
  
  li:hover {
    background-color: #e0e0e0;
  }

  .menu-toggle {
    position: fixed;
    display: flex;
    font-size: 3rem;
    top: 5rem;
    left: 1rem;
    background: none;
    border: none;
    cursor: pointer;
  }

  .menu-icon {
    font-size: 3rem;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    top: 10rem;
    left: 1rem; 
    background-color: white;
    padding: 1rem;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    transition: all 0.3s ease;
    text-decoration: none;
    
  }

  .nav-links.show {
    position: fixed;
    display: flex;
    height: auto;
    width: 25rem;
  }

  .nav-links.show li{
    font-size: 1.3rem;
    height: 3rem;
    padding-top: 1.3rem;
  }

  .navbar img {
    position: fixed;
    height: 25rem;
    padding-top: 2rem;
  }

  .navbar {
    display: flex;
    background-color: white;
    position: fixed;
    width: 100%;
    height: 15rem;
  }

  .button-proposta {
    display: none;
  }

  .btn-proposta {
    display: none;
  }

  .banner2 {
    width: 100%;
  }

}