html {
    font-family: sans-serif;
    font-size: 1.5em;
    line-height: 1.75;
    margin: auto;
    max-width: 70ch;
    padding: 3em 1em;
  }
  
  img {
    width: 100%;
  }
  
  /* Optional 100 more bytes */
  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    margin: 3em 0 1em;
  }
  
  p,
  ul,
  ol {
    color: #1d1d1d;
    margin-bottom: 2em;
  }