nice image – but useless if you like to get help with your formatting/css problem.
please post a link to the site with the issue.
Okay I see alchymyth.
Here it is: http://www.pablonardo.com
i can’t se any major problem with the centering – both in IE and Firefox.
the right padding on the sidebar might make the impression that the site is a bit further to the left.
#middle .sidebar {
width: 250px;
padding: 0 30px 0 0;
float: right;
}
however, help with minor css adaptations like these is not really the core focus of this forum.
a free browser tool such firebug or firefox web developer add-on might help you to identify what css selector is influencing what element on the screen, and to change the formatting.
Sorry alchmyth, I was not concrete enough:
I would like to center the whole blog so that all posts + the sidebar are inside a box, and the space that remains shall be in another color.
So the result shall be sth. like this: http://www.mattcutts.com/blog/
I´ve tried to put an image to the background of my theme, but it only affects the header & footer section.