html, body {
    overflow-x: hidden;
    width: 100%;
  }

  .main img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
  }

  header, nav ul {
    flex-direction: column;
    align-items: center;
    padding: 1rem;
  }
 header {
    height: 150px; /* ou o tamanho que quiser mostrar inicialmente */
    overflow-y: auto;
    padding: 1rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    scroll-behavior: smooth;
  }

  nav ul {
    max-height: 30px; /* altura inicial */
    overflow-y: hidden; /* esconde o conteúdo extra */
    transition: max-height 0.5s ease-in-out;
  }

  header:focus-within nav ul,
  header:hover nav ul {
    max-height: 300px; /* revela mais itens ao interagir */
  }

  nav ul li {
      font-size: 25px;
  }  
  .main {
    padding: 0 1rem;
    box-sizing: border-box;
  }
.ads-lateral {
  display: none;
}