body {
      background-color: #1e1e1e;
      color: white;
      font-family: Arial, sans-serif;
      padding: 40px;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .container {
      display: flex;
      justify-content: center;
      gap: 50px;
      margin-top: 30px;
    }

    .column {
      text-align: left;
    }

    h2 {
      text-align: center;
      margin-bottom: 10px;
    }

    h1.pattern {
      font-size: 1.2rem;
      margin: 4px 0;
    }

    button {
      padding: 10px 20px;
      margin: 10px;
      background-color: #00bcd4;
      border: none;
      border-radius: 5px;
      color: white;
      cursor: pointer;
    }

    button:hover {
      background-color: #008ba3;
    }