Can you post a link to your web site or to a draft of your web site?
One of the things that you could do is to check that you haven't assigned absolute widths (e.g. pixel widths) to any of the boxes that are on your page - or at least that they don't exceed the width of a mobile device. If you give a width of (e.g.) 1000 px to a box, it won't display properly on a mobile device.
You can test your layouts within Xway. If you make the Layout View narrower (e.g. by increasing the width of the Inspector panel), does the content display without horizontal scrolling? Check the widths of any items that don't shrink when you reduce the layout width.