.back-button {
  position: fixed;
  top: 15px;
  left: 15px;
  background-color: #000;
  color: #fff;
  padding: 6px 12px;
  font-family: 'Georgia', serif;
  font-size: 14px;
  text-decoration: none;
  border-radius: 4px;
  box-shadow: 2px 2px 5px rgba(0,0,0,0.4);
  user-select: none;
  z-index: 1000;
  transition: background-color 0.3s ease;
}
.back-button:hover {
  background-color: #444;
}