/* The grid: Four equal columns that floats next to each other */
.gallery_item {
  float: left;
  padding: 0 30px 13px 0;
}
@media screen and (max-width: 480px) {
  .gallery_item {
    float: left;
    padding: 0 15px 13px 0;
  }
}
@media screen and (max-width: 400px) {
  .gallery_item {
    float: left;
    padding: 0 5px 5px 0;
  }
}


/* Style the images inside the grid */
.gallery_item img {
  opacity: 1;
  cursor: pointer;
  border: 1px solid #797979;
  width: 43px !important;
  height: 43px !important;
}

.gallery_item img:hover {
  opacity: 0.6; 
  border: 1px solid #cd0a0a;
}

/* Clear floats after the columns */
.gallery_set {
  width: 75px;
}
.gallery_set:after {
  content: "";
  clear: both;
}

.gallery_container img {
  width: 325px !important;
  height: 325px !important;
}
@media screen and (max-width: 430px) {
  .gallery_container img {
    width: calc(100vw / 1.35) !important;
    height: calc(100vw / 1.35) !important;
  }
}