body {
  font-family: Arial;
  margin: 0;
  background: #f5f5f5;
}

header {
  background: black;
  color: white;
  padding: 15px;
  text-align: center;
}

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

.card {
  background: white;
  width: 300px;
  padding: 10px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  text-align: center;
}

.card img, .card video {
  width: 100%;
  border-radius: 10px;
}

button {
  padding: 10px;
  background: gold;
  border: none;
  cursor: pointer;
  border-radius: 5px;
}

footer {
  text-align: center;
  padding: 15px;
  background: #222;
  color: white;
}

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.7);
}

.modal-content {
  background: white;
  margin: 10% auto;
  padding: 20px;
  width: 80%;
  max-width: 500px;
  border-radius: 10px;
}

.close {
  float: right;
  font-size: 20px;
  cursor: pointer;
}