body {
  background: #333;
  color: #fff;
}

header {
  width: 100%;
  height: 100px;

  display: flex;
  align-items: center;
  justify-content: center;
}

header h1 {
  font: bold 2rem monospace;
}

/* -------------------------------------------------------------------------- */

main {
  height: calc(100vh - 200px);

  display: flex;
  align-items: center;
  justify-content: center;
}

main h1 {
  font: bold 13rem monospace;
  background: url(bg.png);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  animation: moveBackground 15s linear infinite;
}

@keyframes moveBackground {
  from {
    background-position: 0% 0%;
  }
  to {
    background-position: 100% 100%;
  }
}

/* -------------------------------------------------------------------------- */

footer h4 {
  font: 500 1.3rem monospace;
  height: 100px;

  display: flex;
  align-items: center;
  justify-content: center;
}

footer h4 a {
  margin-left: 0.5rem;
}