<div class="masonry-container">
  <div class="masonry-item">
    <img src="https://placehold.co/600x800/2193b0/ffffff?text=Tall+Image" alt="Gallery" loading="lazy">
  </div>
  <div class="masonry-item">
    <img src="https://placehold.co/600x400/6dd5ed/ffffff?text=Wide+Image" alt="Gallery" loading="lazy">
  </div>
  <div class="masonry-item">
    <img src="https://placehold.co/600x600/b92b27/ffffff?text=Square" alt="Gallery" loading="lazy">
  </div>
  <div class="masonry-item">
    <img src="https://placehold.co/600x900/1565C0/ffffff?text=Very+Tall" alt="Gallery" loading="lazy">
  </div>
  <div class="masonry-item">
    <img src="https://placehold.co/600x500/cc2b5e/ffffff?text=Medium" alt="Gallery" loading="lazy">
  </div>
  <div class="masonry-item">
    <img src="https://placehold.co/600x700/753a88/ffffff?text=Portrait" alt="Gallery" loading="lazy">
  </div>
</div>

.masonry-container {
  column-count: 3;
  column-gap: 20px;
  padding: 20px;
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}
.masonry-item {
  break-inside: avoid;
  margin-bottom: 20px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  transition: transform 0.3s ease;
}
.masonry-item:hover {
  transform: translateY(-5px);
}
.masonry-item img {
  width: 100%;
  display: block;
  object-fit: cover;
}
@media (max-width: 900px) {
  .masonry-container {
    column-count: 2;
  }
}
@media (max-width: 600px) {
  .masonry-container {
    column-count: 1;
  }
}