* {
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f9;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 10px;
  padding: 20px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.3s ease;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.caption {
  position: absolute;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  color: #fff;
  width: 100%;
  text-align: center;
  padding: 10px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.gallery-item:hover .caption {
  opacity: 1;
}

@media (max-width: 600px) {
  .gallery {
      grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
      gap: 5px;
  }
}