Mobile phone display issue

Hi I am hoping you can help, I am using the 'Catch Flames' theme and it does not appear to be displaying correctly on mobile phones. The issue is that the background displays unevenly, it only appears down the right hand side, it looks like the content area should be filling the screen but the width is not wide enough to fill the screen. Although this is only the case if the phone is held in portrait mode, if the phone is moved into landscape mode the issue disappears and content is centred with the background colour wrapping all around the edge of the screen. the URL is http://www.wayworcester.org I have a picture of the issue as it appears on the phone which I could send which will make the issue clearer to you. any help would be most appreciated as my client has asked me to fix it but I am not that clever so any help or advice you can give me would be most appreciated. If there is any information I can send to you please don't hesitate to ask. Yours most appreciatively Andy Jones, Malvern, UK