* {
  font-family: Arial, Helvetica, sans-serif;
}

html, body {
  margin: 0;
  border: 0;
  padding: 0;
  background-color: #222;
  color: #DDD;
}

.centered {
  position: fixed;
  top: 50%;
  left: 50%;
  margin-top: -75px;
  margin-left: -200px;
}