Here is the markup for a portfolio item
<div class="item" data-groups='["photography", "streetart"]'> <div class="wrapper pa fullwidth fullheight zim p10"> <a href="/index.php?action=artikel&lang=en&cat=24&id=119&artlang=en#" class="wrapper fullwidth fullheight description"> <div class="wrapper acc pa"> <h3 class="text fz5 cw fw3 ac mb20">Item title</h3> <p class="text fz1 fw3 fsl ac">Item tags</p> </div> </a> </div> <img src="img/theme/portfolio/small/1.jpg" class="image" alt="portfolio"> </div>
In data-groups set the item tags.
To add a new portfolio tag item copy/paste a list item and set your custom tag
<ul class="list inline xsgutter mb50"> <!-- tag item --> <li class="portfoliofilter" data-group="tag-name"><span class="text fz3 fsi fw3 ttu pointer">tag name</span></li> </ul>