@charset "utf-8";

body {
    background-color: #f7f7f7;
    margin: 0;
    padding: 0;
  }

  main {
    max-width: 800px;
    margin: 40px auto;
    background-color: #fff;
    padding: 30px;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
  }

  h1 {
    font-size: 28px;
    margin-bottom: 20px;
  }

  h2 {
    font-size: 20px;
    margin-top: 30px;
    color: #444;
    border-left: 4px solid #666;
    padding-left: 10px;
  }

  p, li {
    font-size: 16px;
    margin-bottom: 10px;
  }

  ul {
    padding-left: 20px;
    margin-top: 5px;
  }

  @media screen and (max-width: 600px) {
    main {
      margin: 20px;
      padding: 20px;
    }

    h1 {
      font-size: 24px;
    }

    h2 {
      font-size: 18px;
    }
  }