body {
  font-family:'Open Sans',sans-serif;
  font-weight:200;
  background-color:#222;
  color:#fff;
}

h1 {
  text-align: center;
  margin-top:150px;
  color:#fff;
}

#demo {
  width:350px;
  height:220px;
  border:1px solid #fefefe;
  padding:20px;
  margin:130px auto;
}