Fixed width site and boxes corner colours not changed

[berto9999]

have been scrolling through tips and trick and am stuck on how to set my site

to a fixed width can any one help. also i have changed the colours of my boxes but the

corners still remain blue can anyone help with these???

 

thanks rob

[Guest]

have been scrolling through tips and trick and am stuck on how to set my site

to a fixed width can any one help. also i have changed the colours of my boxes but the

corners still remain blue can anyone help with these???

 

thanks rob

corners are images.

see Fixed Width Site With CSS addon.