body {
  font-size: 110%;
  margin: 0;
  padding: 0;
}

h1 {
  font-family: sans-serif;
  background-color: #dddddd;
  color: #003366;
  text-align: center;
  padding: 16px;
  margin: 0 0 60px 0;
  border-bottom: 1px solid #aaaaaa;
}

div.container {
  width: 490px;
  margin: 30px auto 100px auto;
  border: 1px solid #cccccc;
  padding: 1.0em 1.8em;
}

form {
  margin: 1.2em 0em;
  background-color: #aaccee;
  text-align: center;
  padding: 16px 0;
}

form input {
  font-size: 22px;
}

input#registration-code {
  width: 9em;
}