body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f9fafb;
  color: #333;
}

header {
  background: linear-gradient(135deg, #007aff, #00c6ff);
  color: #fff;
  padding: 16px;
  text-align: center;
}

.video-container {
  display: flex;
  justify-content: center;
  padding: 20px;
}

video {
  width: 100%;
  max-width: 800px;
  border-radius: 12px;
  box-shadow: 0 8px 18px rgba(0,0,0,0.25);
}

footer {
  background: #f3f4f6;
  padding: 12px;
  text-align: center;
  font-size: 14px;
}