body {
  background: black;
  color: #00ffcc;
  font-family: 'Press Start 2P', monospace;
  padding: 20px;
  margin: 0;
  text-align: center;
}

a {
  color: #00ffcc;
  text-decoration: none;
}

header {
  border-bottom: 2px solid #00ffcc;
  padding-bottom: 10px;
}

nav a {
  margin: 0 15px;
  font-size: 12px;
}

.btn {
  display: inline-block;
  margin-top: 20px;
  padding: 10px;
  border: 2px solid #00ffcc;
  color: #00ffcc;
  background: black;
  text-transform: uppercase;
}

.crt {
  position: relative;
  overflow: hidden;
}

.crt::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 255, 204, 0.05) 2px, rgba(0, 255, 204, 0.05) 4px);
  pointer-events: none;
  z-index: 1;
}