body {
  margin: 0;
  background: #000;
}

#horizon    {
  text-align: center;
  font-size: 0px;
  position: absolute;
  top: 50%;
  left: 0px;
  width: 100%;
  height: 1px;
  overflow: visible;
  visibility: visible;
  display: block
}

#intro {
  width: 522px;
  height: 483px;
  position: absolute;
  margin-left: -261px;
  top: -241px;
  left: 50%;
  visibility: visible;
}

a {
  outline: none;
}