body {
  font-size: 16px;
  font-family: Helvetica, Arial, sans-serif;
  line-height: 1.5;
  background-color: #111;
  color: #999;
}

h1 {
  font-size: 3em;
  text-transform: uppercase;
  text-align: centre;
  letter-spacing: 5px;
}

p {
  margin-top: 1em;
  font-family: Georgia, 'Times New Roman', serif;
  text-align: center;
}
body {
  font-size: 16px;
  font-family: Helvetica, Arial, sans-serif;
  line-height: 1.5;
  background-color: #999;
  color: #008080;
}

h1 {
  font-size: 3em;
  text-transform: uppercase;
  text-align: center;
  letter-spacing: 5px;
}

p {
  margin-top: 1em;
  font-family: Georgia, 'Times New Roman', serif;
  text-align: center;
}
Change colouring of body text & background. Correct typo.
Change colouring of body text & background. Correct typo.