body {
  font-family: system-ui, sans-serif;
  margin: 2rem;
}

.back-link {
  position: fixed;
  top: 12px;
  left: 12px;
  background: #111;
  color: #fff;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 14px;
  text-decoration: none;
  z-index: 9999;
}

.back-link:hover {
  opacity: 0.85;
}