After recently creating a new DNN website I noticed the page width varies from page to page. Why? I only use text modules and there are no graphics or images on any page. The text in the text modules are in 600 pixel wide tables.

do you have a url we can look at? If not I would have a look at the source code of the page and see if there is anything that stands out for one of the pages where the width varies and compare it to the source code with one of the pages that displays ok.

Thanks for the URL, I could not find the problem. it was hard to look through the source code because there is lots of extra font styling and table styling in there that is not really needed.

I would suggest you have a read of this tutorial for what I mean:
Bad Practices when working with the Text / HTML module

to find the problem, I would create a new page and check that it displays the correct width.

I would then add some text to that page, just in the content pane - make sure the width stays correct

If that works ok, I would try adding other elements to the page until you find the cause of the problem.

There must be a difference between the home page and 'our services' page for the width to expand like that.

On the new page, you could try adding one element at a time from the 'our services' page.

It will be a matter of troubleshooting and testing various elements.

Thanks,