body {
  background-color: lightblue;
}

main {
  background: white;
  margin: 20px 0;
  padding: 10px;
  text-align: center;
}

main div {
  background: black;
  margin: 0 auto;
  color: white;
  padding: 15px;
  margin: 5px auto;
}


h1 {
  color: navy;
  margin-left: 20px;
}

h2 {
  color: red;
}

h3 {
  color: yellow;
  margin-top: 50px;
}

ul {
  list-style-type: circle;
  color: darkblue;
  background-color: none;
}