On smaller resolution devices you can collapse the left and right sidebars to provide more space for viewing the contents of a page.

Name:  Screen Shot 2014-04-14 at 2.03.17 PM.jpg
Views: 1245
Size:  109.9 KB

And this is how the page looks when we have collapsed the left and right sidebars.

Name:  Screen Shot 2014-04-14 at 2.03.36 PM.jpg
Views: 1042
Size:  82.7 KB