Mohammad,
I stumbled on the following that is not exactly what you ask, but could lead you to the full answer by finding out how the class is defined.
<$button class="tc-btn-boxed">
{{tiddlername}}
</$button>
This does allow it to act like a preview with a single button response, eg open the tiddler
I went directly to
<div class="tc-btn-boxed" style="width:20%;">
{{Dashboard}}
</div>
however you may have to fiddle with the width
Then finally you can use tables, even only part to get the same.
<tr>
<td style="width:50%;">
{{Dashboard}}
</td>
<td style="width:50%;">Space for more</td>
</tr>
This does not scale but does size it
In each of the above examples you may need to add additional styling or remove some of it, but basically this can be done with CSS, and the css already exists in TiddlyWiki
Regards
Tony