.banner-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  transition: opacity 1s ease-in-out;
  z-index: 0;
}

.banner-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5); /* transparência escura */
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10; /* acima das imagens */
  text-align: center;
  padding: 1rem;
}
  .whatsapp-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: #25D366;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: background-color 0.3s ease;
  }
  .whatsapp-btn:hover {
    background-color: #128C7E;
  }
  .whatsapp-btn img {
    width: 35px;
    height: 35px;
  }