.scroll-down {
  position: fixed; /* fixa na tela */
  bottom: 20px;
  right: 20px;
  font-size: 2rem;
  z-index: 1000;
  animation: bounce 1.5s infinite;
}

.scroll-down a {
  color: #fff; /* ajusta pro seu tema */
  background: rgba(0,0,0,0.3);
  padding: 10px 12px;
  border-radius: 50%;
  backdrop-filter: blur(5px);
  transition: 0.3s;
}

.scroll-down a:hover {
  transform: scale(1.1);
}