.code-block {
  position: relative;
}

.copy-btn {
  position: absolute;
  top: 2px;
  right: 12px;

  padding: 4px 8px;
  font-size: 0.75rem;
  border-radius: 6px;

  background: #1e293b;
  color: #fff;
  border: none;
  cursor: pointer;
  opacity: 0.8;

  z-index: 10;
}

.copy-btn:hover {
  opacity: 1;
}