#gallery {
  /* Prevent vertical gaps */
  line-height: 0;

  -webkit-column-width: 200px;
  -webkit-column-count: auto;
  -webkit-column-gap:   2px;
  -moz-column-width:    200px;
  -moz-column-count:    auto;
  -moz-column-gap:      2px;
  column-width:         200px;
  column-count:         auto;
  column-gap:           2px;  
}
  
#gallery img {
  /* Just in case there are inline attributes */
  width: 100% !important;
  height: auto !important;
}
  
.gallery-item {
  display: grid | inline-grid;
  grid-template-columns: repeat(8, 1fr);
  grid-template-rows: repeat(8, 5vw);
  grid-gap: 50px;
}
  
.gallery-item li {
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  display: inline;
  list-style-type:lower-greek;
}