About Wiki Page Layouts
From Help Wiki
This article references the Bootstrap 3.0 classes available for grid-based page layouts when using the default Evergreen MediaWiki skin (Chameleon).
Create a 2 Column Layout Help Wiki default article
Create a main content + sidebar layout
<div class="container-fluid"> <div class="row"> <div class="col-md-8 "> <div class="lead">Lead text goes here </div> <!-- end col-md-8 --> </div> <div class="col-md-4 sidebar">