body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f1f1f1;
}

header {
  padding: 20px;
  background: #222;
  color: #fff;
  text-align: center;
}

.tabs {
  display: flex;
  justify-content: center;
  margin: 10px 0;
  gap: 10px;
}

.tabs button {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  background-color: #ccc;
}

.tabs button.active {
  background-color: #444;
  color: white;
}

.banner {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.banner button {
  padding: 10px 15px;
  border: none;
  background-color: #444;
  color: white;
  border-radius: 20px;
  cursor: pointer;
  transition: background 0.3s;
}

.banner button:hover {
  background-color: #666;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
  gap: 20px;
  padding: 20px;
  justify-items: center;
}

.card {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  width: 100%;
  max-width: 720px;
}

iframe {
  width: 100%;
  height: 405px;
  border: none;
}

#commentSection {
  padding: 20px;
  text-align: center;
}

textarea {
  width: 100%;
  max-width: 600px;
  font-size: 16px;
  padding: 10px;
}

.comment-box {
  margin-top: 20px;
  font-style: italic;
  background: #fff;
  border-radius: 10px;
  padding: 15px;
  max-width: 600px;
  margin-inline: auto;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}