body {
  max-width: 40em;
  margin: 0 auto;
  padding: 5px;
  font-family: Georgia, serif;
  font-size: 18px;
  line-height: 1.6em;
  color: black;
}
h1, h2, h3 {
  font-family: sans-serif;
  font-weight: normal;
}

@media only screen and (max-width: 600px) {
  h1 {
    font-size: 20px;
  }

  h2 {
    padding: 10px;
  }

  h3 {
    font-size: 16px;
  }
  img {
  max-width: 100%;
  height: auto;
  }
}
img {
  max-width: 100%;
  height: auto;
}