body {
    background-color: black;
    color: #00ff00;
    font-family: Consolas, monospace;
    margin: 5rem;
    padding: 0;
  }
  a {
    color: #00ff00;
    text-decoration: underline;
  }
  hr {
    border: 0;
    height: 1px;
    background: #00ff00;
    margin: 2rem 0;
  }
  pre {
    background: #111;
    padding: 1rem;
    border: 1px solid #00ff00;
    overflow-x: auto;
  }
  .columns {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
  }
  .column {
    flex: 1;
    text-align: center;
  }