main, header, footer {
  max-width: 600px;
  margin: 10px auto;
  padding: 10px;
  background-color: aliceblue;
  font-family:'Courier New', Courier, monospace;
  p {
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
  }
}