Page showing narrower than the 900px setting
 

My header img is 900px. In ATO/Layout the page is set to 900px. I have deleted all margins that I can find. Problem is that the page is only 820 px wide or so. So I made the image 940px wide, but then the page only went to 860px. I have looked everywhere for margins, padding settings, but do not see where I have missed it.

I built a standard html site and built a WP site for their blog. I want them to look exactly the same. I have done this before with some success, but not this time!

Atahualpa 3.4.9
Latest WP

http://bowcottwoodworking.com/custom...ntry-cowichan/

(The reason I have the html pages at all is because their site has a number of galleries and I like using
Visual Light Box which is easier to use on a standard site.)

You site looks fine to me (900px) and matches with the HTML pages.

Really? Wow. It is markedly different on my monitor
Here is an html page
http://www.bowcottwoodworking.com/x-html.jpg
Here is the WP page

http://www,bowcottwoodworking.com/x-wp.jpg

80px in the difference. I wonder why my monitor is doing that???

Thank you for checking, by the way.

for some reason the second picture is not showing. Here it is:

http://www.bowcottwoodworking.com/x-wp.jpg

Here is a screencast in Firefox showing Atahualp and HTML comparison with a 900px ruler over it. Other screencasts below.
Internet Explorer
Safari
Opera
Chrome

Thank you so much for your trouble. I guess I will have to get a tech guy over here to check out my monitor. I changed the settings and it still shows me different sizes. But I am relieved that I do not have to spend the rest of the day trying to fix a problem that does not exist!

I use Atahualpa only and was thinking I would have to change:(
Now I don't have to.