body {
  font-family: 'Open Sans', sans-serif;
  background-image: url(../img/background.png);
}
h1 {
  font-family: 'Slabo 27px', serif;
  color: #3C3C3C;
}
.center {
  text-align: center;
}
.lockscreen {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}