"Welcome Email" - Layout Issues

[irelandseye]

Hi,

Still a fairly new zenner so bear with me.

using Zen Cart 1.3.8a

I have a 'reasonably' good working knowledge of CSS but just cannot find where to amend the layout of my Welcome Email - I know where to change the content, but it looks dreadful when going out because the main section is not wide enough to accommodate either the standard 'welcome coupon' box or our header. I could change our header - but that wouldn't stop the coupon box 'going wide'.

See attachment.

All I want to do make the main div/box a bit wider...

Have spent 2 hrs searching the forums and can't find any clues!



Help very very much appreciated.
Cheers,
Clare