h1 {
  color: #555;
  font-size: 2em;
  font-weight: 400;
}

pre {
  text-align: left;
  margin-top: 2rem;
}

@media only screen and (max-width: 280px) {

  body,
  p {
    width: 95%;
  }

  h1 {
    font-size: 1.5em;
    margin: 0 0 0.3em;
  }

}