.custom-code {
  background-color: #f4f4f4;
  padding: 10px;
  font-family: monospace;
  border-style: groove;
  box-shadow: 3px 3px 1px black;
  overflow-x: auto;
  white-space: preserve-spaces;
}

.custom-code .line {
  margin: 0;
  font-size: 1rem;
  color: #333;
}