.mw-custom-gallery { max-width: 980px; }
.mwcg-main { margin-bottom: 12px; }
.mwcg-main-img { display:block; height:auto; }

.mwcg-thumbs {
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}

.mwcg-thumb img {
  display:block;
  height:auto;
  border-radius:6px;
  border:1px solid rgba(0,0,0,0.15);
}

.mwcg-thumb.is-active img {
  outline:2px solid rgba(0,0,0,0.55);
  outline-offset:2px;
}