.to-top {
  display: flex;
  justify-content: center;
  align-items: center;
  position: fixed;
  z-index: 10;
  bottom: 16px;
  right: 16px;
  width: 64px;
  height: 64px;
  background-color: var(--wp--preset--color--custom-bleu-fonc);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s ease-in-out;
  border: 2px solid white;
  opacity: 0;
  visibility: hidden; 
}

.to-top.show {
  opacity: 1;
  visibility: visible;
}

.to-top:hover {
  background-color: var(--wp--preset--color--custom-vert);
}