.gallery-container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.gallery-item {
  width: 200px;
}
.gallery-item img, .gallery-item iframe {
  width: 100%;
  height: auto;
}
.lightbox {
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  background: rgba(0,0,0,0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}
.lightbox-content img {
  max-width: 90%;
  max-height: 90%;
}