<h1 class="selector-header"></h1>
<div class="top-bar"><button class="action button">Select All</button><span>0/0</span></div>
<div class="left-inv-selector" id="source-left"></div><div class="right-inv-selector" id="inventory-right"></div>
<div class="bottom-bar"><button class="action button">Do the thing</button></div>