Another example, in page Community
<div id="t3-content" class="t3-content item-2 isotope-item" style="position: absolute; left: 0px; top: 30px;">
if i remove class item-2 and isotope-item, community is full witdh ! and not 40 % ... :
.ja-masonry-wrap .grid-hd-5 .isotope-item.item-2 {
width: 40%;
}
Why and where set this "40%" ?