Content not displaying on Android Chrome browser

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http://stackoverflow.com – I am making a responsive website which has a toggle sidebar button. In mobile using chrome browser on Android, when I click on it, the sidebar opens while the portion of the screen gets hidden. But when I close the sidebar, the elements which got hidden from viewport does not display back. I tested on mobile firefox, mobile dolphin and almost all web browsers. It works fine there. Only problem is with chrome mobile browser. Here's the link to the test page http://cloudadmin-theme.elasticbeanstalk.com/ Thanks for your help :) (HowTos)