html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  font: 14px "Lucida Grande", Helvetica, Arial, sans-serif;
}

#center {
  min-height: 100%;
  background-color: #333;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

h1 {
  color: white;
}

a {
  color: #00B7FF;
}