Fix NPF photosets on Tumblr themes

fix_npf_photosets.css

.post-content div.npf_row,
.post div.npf_row,
body div.npf_row {
  align-items: stretch;
}

.post-content div.npf_row .npf_col,
.post div.npf_row .npf_col,
body div.npf_row .npf_col {
  display: flex;
}

.post-content div.npf_row .npf_col figure,
.post div.npf_row .npf_col figure,
body div.npf_row .npf_col figure {
  padding-bottom: 0;
}

.post-content div.npf_row .npf_col figure img,
.post div.npf_row .npf_col figure img,
body div.npf_row .npf_col figure img {
  position: static;
}