:root {
      --bg-color: #f5f5dc;
      --text-color: #000000;
      --link-color: #0000ee;
      --vlink-color: #551a8b;
      --code-bg: #ffffff;
      --hr-color: #000000;
    }

    body {
      background-color: var(--bg-color);
      color: var(--text-color);
      font-family: "Courier New", Courier, monospace;
      font-size: 16px;
      line-height: 1.5;
      margin: 0;
      padding: 0;
      display: flex;
      justify-content: center;
    }

    .container {
      max-width: 800px;
      width: 100%;
      padding: 20px;
      box-sizing: border-box;
    }

    a {
      color: var(--link-color);
    }

    a:visited {
      color: var(--vlink-color);
    }

    h1 {
      text-align: center;
      font-size: 1.8rem;
      margin-bottom: 1rem;
    }

    h2 {
      font-size: 1.5rem;
      margin-top: 2rem;
    }

    h3 {
      font-size: 1.2rem;
      margin-top: 1.5rem;
    }

    p,
    li {
      margin-bottom: 1rem;
    }

    pre {
      background-color: var(--code-bg);
      padding: 15px;
      border: 1px solid #ccc;
      overflow-x: auto;
      white-space: pre-wrap;
      word-wrap: break-word;
      font-size: 0.9rem;
      line-height: 1.4;
    }

    code {
      background-color: rgba(0, 0, 0, 0.05);
      padding: 2px 4px;
      border-radius: 3px;
    }

    hr {
      border: 0;
      border-top: 1px solid var(--hr-color);
      margin: 2rem auto;
    }

    .header-hr {
      width: 80%;
    }

    .footer-hr {
      width: 60%;
    }

    center {
      display: block;
      text-align: center;
    }

    @media (max-width: 600px) {
      body {
        font-size: 15px;
      }

      h1 {
        font-size: 1.4rem;
      }

      h2 {
        font-size: 1.3rem;
      }

      .container {
        padding: 15px;
      }

      pre {
        padding: 10px;
        font-size: 0.85rem;
      }
    }