.btn-Allretour {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 60px;
  height: 60px;
  background-color: #012960;
  color: white;
  border: 1px solid gold;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s, transform 0.2s;
  overflow: hidden;
}

.btn-Allretour:hover {
  background-color: gold;
  color: #012960;
  transform: scale(1.1);
}