body {
  font-family: 'Open Sans', sans-serif;
  background-color: #121212;
  color: #f0f0f0;
  margin: 0;
  padding: 20px;
}
a.button {
  display: inline-block;
  padding: 10px 15px;
  background-color: #ffcc00;
  color: #121212;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  margin-top: 10px;
}