body {
  font-family: Arial, sans-serif;
  text-align: center;
  background: #f9f9f9;
  padding: 20px;
}
h2, h3 { color: #333; }
table {
  margin: 20px auto;
  border-collapse: collapse;
  width: 90%;
  max-width: 600px;
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
}
th, td {
  padding: 10px;
  border-bottom: 1px solid #ddd;
}
button {
  padding: 6px 10px;
  margin: 0 2px;
  cursor: pointer;
  background: #0073aa;
  border: none;
  color: #fff;
  border-radius: 4px;
}
button:hover { background: #005f8d; }
video {
  width: 320px;
  border: 2px solid #ccc;
  border-radius: 10px;
  margin-bottom: 10px;
}