NOTE: Very simple grid gallery, using CSS only (no javascript or plugin loaded). Working on all browsers ; Internet Examplrer: 10+
5 Columns
<!--
+ SIMPLE GALLERY - CSS ONLY
.gallery-simple-columns-1
.gallery-simple-columns-2
.gallery-simple-columns-3
.gallery-simple-columns-4
.gallery-simple-columns-5
NOTE: Internet Explorer - required 10+ (not working on lower versions)
-->
<div class="gallery-simple gallery-simple-columns-5 lightbox" data-plugin-options='{"delegate": "a", "gallery": {"enabled": true}}'>
<a href="demo_files/images/packs/hotel/gallery/1-min.jpg">
<img src="demo_files/images/packs/hotel/gallery/1-min.jpg" alt="" />
</a>
<a href="demo_files/images/packs/hotel/gallery/13-min.jpg">
<img src="demo_files/images/packs/hotel/gallery/13-min.jpg" alt="" />
</a>
<a href="demo_files/images/packs/hotel/gallery/2-min.jpg">
<img src="demo_files/images/packs/hotel/gallery/2-min.jpg" alt="" />
</a>
<a href="demo_files/images/packs/hotel/gallery/3-min.jpg">
<img src="demo_files/images/packs/hotel/gallery/3-min.jpg" alt="" />
</a>
<a href="demo_files/images/packs/hotel/gallery/4-min.jpg">
<img src="demo_files/images/packs/hotel/gallery/4-min.jpg" alt="" />
</a>
<a href="demo_files/images/packs/hotel/gallery/5-min.jpg">
<img src="demo_files/images/packs/hotel/gallery/5-min.jpg" alt="" />
</a>
<a href="demo_files/images/packs/hotel/gallery/8-min.jpg">
<img src="demo_files/images/packs/hotel/gallery/8-min.jpg" alt="" />
</a>
<a href="demo_files/images/packs/hotel/gallery/9-min.jpg">
<img src="demo_files/images/packs/hotel/gallery/9-min.jpg" alt="" />
</a>
<a href="demo_files/images/packs/hotel/gallery/10-min.jpg">
<img src="demo_files/images/packs/hotel/gallery/10-min.jpg" alt="" />
</a>
<a href="demo_files/images/packs/hotel/gallery/11-min.jpg">
<img src="demo_files/images/packs/hotel/gallery/11-min.jpg" alt="" />
</a>
<a href="demo_files/images/packs/hotel/gallery/6-min.jpg">
<img src="demo_files/images/packs/hotel/gallery/6-min.jpg" alt="" />
</a>
<a href="demo_files/images/packs/hotel/gallery/12-min.jpg">
<img src="demo_files/images/packs/hotel/gallery/12-min.jpg" alt="" />
</a>
<a href="demo_files/images/packs/hotel/gallery/7-min.jpg">
<img src="demo_files/images/packs/hotel/gallery/7-min.jpg" alt="" />
</a>
</div>