At some point last night, without me having changed anything in my style definitions, an ugly border appeared all around my livejournal page. The colour of the border is the colour I had defined for background colour, but I had been using a background image which covered the entire page. It somehow seems to have shrunk, though, and this, I repeat, without me having changed anything. I've had the same layout settings for years. The background image is set to "repeat", "center" and "scrool", so in theory it should repeat itself over the entire page and not just part of it.
Here's the journal so you can see it yourself: http://nymeth.livejournal.com
Can anyone help me to fix this? It'd be greatly appreciated.