body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f8f8f8;
    color: #333;
    margin: 0;
    padding: 0;
  }
  
  .container {
    max-width: 900px;
    margin: 40px auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
  }
  
  h1 {
    font-size: 2.2em;
    margin-bottom: 20px;
    color: #1a1a1a;
  }
  
  h2 {
    font-size: 1.5em;
    margin-top: 30px;
    color: #2c3e50;
  }
  
  h3 {
    font-size: 1.2em;
    margin-top: 20px;
    color: #34495e;
  }
  
  p {
    margin: 15px 0;
  }
  
  ul {
    list-style: disc;
    padding-left: 20px;
  }
  
  li {
    margin: 8px 0;
  }
  
  strong {
    font-weight: bold;
  }
  
  @media screen and (max-width: 600px) {
    .container {
      margin: 20px;
      padding: 15px;
    }
  
    h1 {
      font-size: 1.6em;
    }
  
    h2 {
      font-size: 1.3em;
    }
  
    h3 {
      font-size: 1.1em;
    }
  }