@media screen and (max-width: 680px) {
  .abrir-menu,
  .cerrar-menu {
    display: block;
    border: 0;
    font-size: 1.5rem;
  }

  header{
  background-color: var(--quito-color);
  display: flex;
  align-items: center;
  box-shadow: 10px 10px 23px 5px rgba(114, 111, 120, 0.5);
  position:fixed;
  justify-content: space-between;

}

  .nav {
    opacity: 0;
    visibility: hidden;
    display: flex;
    flex-direction: column;
    align-items: end;
    position: absolute;
    top: 0;
    right: 0;
    background-color: var(--quito-color);
    box-shadow: 0 0 0 100vmax rgba(114, 111, 120, 0.5);
    border-radius: 2rem;
    margin: 2px;
  }

  .nav.visible {
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    align-items: end;
    font-size: 18px;
    margin: 1rem;
  }

  .nav-list li a {
    font-size: 20px;
  }




}