"desc"><p>total number of columns in grid</p></td><td data-label="type"><code>Number</code></td><td data-label="default">&mdash;<span class="visually-hidden">none</span></td></tr><tr class="item__parameter"><th scope="row" data-label="name"><code>$prefix</code></th><td data-label="desc"><p>class prefix for offset</p></td><td data-label="type"><code>String</code></td><td data-label="default">&mdash;<span class="visually-hidden">none</span></td></tr><tr class="item__parameter"><th scope="row" data-label="name