body {
  margin: 0;
  font-family: Arial;
  background: #111;
  color: white;
}

.player {
  max-width: 900px;
  margin: auto;
}

iframe {
  width: 100%;
  height: 400px;
  border: none;
}

#gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  padding: 10px;
  max-width: 900px;
  margin: auto;
}

.card {
  cursor: pointer;
}

.card img {
  width: 100%;
}