Hi there!

After having check a few posts I am not hundred per cent sure of what files, css and other aspects I would have to edit if I want to increase the plain yoghurt theme.

I would like to increase the width to 900px, so it will involve making some changes in main.css and left, full and right pages.

Before I start, is there any particular aspect I should take into account in order to make changes that would apply sitewide changes? Best practices?