twitter-bootstrap Grid system Column order manipulation using push and pull


<div class="container content">
    <div class="row">
        <!--Main Content-->
        <div class="col-lg-9 col-lg-push-3">
            Main Content
        <div class="col-lg-3 col-lg-pull-9">

This change the order of the built-in grid columns.

Syntax: .col-md-push-* and .col-md-pull-*.

Column order manipulation using col-lg-push and col-lg-pull in Twitter Bootstrap 3
Bootstrap 3: Push/pull columns only on smaller screen sizes
Column Ordering & Stacking in Bootstrap 3