/* [THUMBNAILS] */
#gallery {
  max-width: 1200px;
  margin: 0 auto;
}

#gallery img {
  //box-sizing: border-box;
  //width: 25%;
  max-height: 150px;
  padding: 5px;
  /* fill, contain, cover, scale-down : use whichever you like */
  //object-fit: contain;
  cursor: pointer;
}

/* [RESPONSIVE - MOBILE FRIENDLY] */
@media screen and (max-width: 850px) {
  #gallery img { width: 33%; }
}
@media screen and (max-width: 640px) {
  #gallery img { width: 50%; }
}

/* [LIGHTBOX BACKGROUND] */
#lback {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 999;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all ease 0.5s;
}
#lback.show {
  opacity: 1;
  visibility: visible;
}

/* [LIGHTBOX IMAGE] */
#lfront {
  text-align: center;
  position: relative;
  top: 50%;
  transform: translateY(-50%);
}
#lfront img {
  max-width: 80vw;
  max-height: 80vh;
}