I've published my website on Adobes server (lostinfrance.businesscatalyst.com/index.html) and it looks pretty much as I intended. But the sharp version (lostinfrance.se) the background won't follow the window in the browser. I will get in touch with one.com about this but I would like to have some more knowledge about the problem first.
Thanks for your patience. I see the same behavior when viewing your two different sites. The problem is related to the permissions set on script files uploaded to lostinfrance.se that your Muse site needs to load in order to make the background follow or "stretch" to the width of the browser. Your Muse site is unable to load these files because they are forbidden (403 error):
You're correct in wanting to contact your hosting provider about this. You need to ask them to modify the permissions on the scripts folder that Muse requires:
You can learn more about this in the topic My site doesn't work when I upload to my own web host, but it's fine in Preview or BC. Why?: http://forums.adobe.com/thread/982488