template.html problems

[bebu]

Hello
Iam having problems with the custom heading situation
I made my custom setting and it works fine on the page.
i placed the {CUSTOM_HEADER} then added my table below it. but when i do this the whole template of my gallery is all messed up. it is not retaining the style that I have which i editited the style.ccs I have no clue why this keeps happening, i tried it a few times and i have to resort to placing back the original template.html file into my server without the custome header that i really need on my gallery.  Thank you

[hyperion]

A link to your gallery while it is in this dishevelled condition would make diagnosis much easier.

[bebu]

This is what im doing:
Im going into the template.html and adding:
{CUSTOM_HEADER}
then i add my html table (which is my navi)
and the whole style changes, its like pure plain like it is not reading the style.css file.
I also tried just adding the table and not {CUSTOM_HEADER}  but i got the same problem.  A link to my gallery will provide nothing since  I have switched it back so it can look normal,
I have not added any mods, only changes I have made to any files are changed a few color values in the style.css file to match my site.  Thanks for the help in advance