body {
  padding: 50px;
  font: 18px "Lucida Grande", Helvetica, Arial, sans-serif;
  font-size: 150%;
}

@media only screen and (min-width: 768px) {
  #main {
    max-width: 450px;
  }
}
@media only screen and (max-width: 768px) {
  #main {
    width: 100%;
  }
}

input {
  font-size: 125%;
}

a {
  color: #00B7FF;
}