.banner-ad {
  background-color: var(--primary, #007cba);
  color: var(--primary-foreground, #fff);
  padding: 10px;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: var(--radius, 6px);
}

.random-ad {
  background-color: var(--muted, #f5f5f5);
  color: var(--foreground, #333);
  padding: 10px;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: bold;
}

@media (max-width: 768px) {
  .banner-ad,
  .random-ad {
    font-size: 75%;
  }
}