body {
  font-family: 'Segoe UI', sans-serif;
  background: #1e1e2f;
  color: #f5f5f5;
  text-align: center;
  padding: 40px;
}

.container {
  background: #2c2f4a;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 0 20px #000;
}

button {
  background: #6a5acd;
  border: none;
  padding: 12px 24px;
  color: white;
  font-size: 16px;
  border-radius: 6px;
  cursor: pointer;
  margin: 10px;
}

button:hover {
  background: #7b68ee;
}

pre {
  text-align: left;
  background: #333;
  padding: 10px;
  border-radius: 5px;
  overflow-x: auto;
}

video, canvas {
  margin: 10px auto;
  border: 2px solid #444;
  background: black;
}