form {
  width: 900px;
  margin: 30px auto;
  line-height: 1.8em;
  text-align: center;
}

form a {
  color: #0000ee;
  text-decoration: underline;
}

#form-button {
  margin: 30px 0 0 0;
  text-align: center;
  width: auto;
}