body {
  margin: 0;
  background: #111;
  font-family: Arial, Helvetica, sans-serif;
  color: #ddd;
  overflow: hidden;
}

.container {
  text-align: center;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

nav a {
  display: inline-block;
  margin: 15px;
  padding: 10px 20px;
  border: 1px solid #444;
  text-decoration: none;
  color: #aaa;
  transition: 0.3s;
}

nav a:hover {
  background: #222;
  color: #fff;
  border-color: #888;
}

#startup {
  position: fixed;
  width: 100%;
  height: 100%;
  background: #000;
}

#glitchCanvas {
  width: 100%;
  height: 100%;
}

#welcomeText {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 3em;
  opacity: 0;
  letter-spacing: 8px;
  color: #eee;
}

.hidden {
  display: none;
}

button {
  background: #222;
  color: #ccc;
  border: 1px solid #444;
  padding: 10px 20px;
  cursor: pointer;
}

button:hover {
  background: #333;
}