/* (A) GALLERY WRAPPER */
/* (A1) BIG SCREENS - 3 IMAGES PER ROW */
.gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-gap: 3px;
  max-width: 1280px;
  margin: 0 auto; /* horizontal center */
}

/* (A2) SMALL SCREENS - 2 IMAGES PER ROW */
@media screen and (max-width: 640px) {
  .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* (B) THUMBNAILS */
.gallery img {
  width: 100%;
  height: 200px;
  object-fit: cover; /* fill | contain | cover | scale-down */
  border: 4px solid #cdcdcd;
  cursor: pointer;
  margin-bottom: 5px;
}

/* (C) FULLSCREEN IMAGE */
.gallery img.full {
  position: fixed;
  top: 0; left: 0; z-index: 999;
  width: 100vw; height: 100vh;
  object-fit: contain; /* fill | contain | cover | scale-down */
  cursor: pointer;
  background: #1B5989;
}

/* (D) OPTIONAL ANIMATION */
.gallery { overflow-x: hidden; }
.gallery img { transition: all 0.9s; } */