Have deactivate all my plugins and it works!
#sorted.
Thanks for the advice. I had actually checked this and it is set at 100% and is also showing the content centred in the preview pan on the dashboard but once I save and go to the site it is then aligned to the left and no longer centred. It is centred on mobile portait but not on landscape nor on desktop.
You can check here http://www.youssrirahman.com
Thanks for letting me know.
Y.
