I'm assuming that you're creating styles using embedded Cascading Style
Sheets (CSS).
The style declarations need to be in every page that needs them. To get the
styles into each page, you need to repeat the process you're using or (good
news) switch to the better and easier method of using an external CSS file
and link every page to it. One of the biggest benefits of this method is
that you only need to update one file to make changes site-wide.
If you're using FP2002 or FP2003, (can't remember if this is available in
FP2000) linking to style sheets is easy. Once you've created your CSS file
and saved it in your site, click "Format | Style Sheet links..." and select
all the pages that you want it to apply to.
For starters, you can simply copy the style declarations from the page(s)
you've edited so far. Look in the <head> of the document and you'll
probably see <style></style> tags with declarations matching the formatting
you've chosen. Just copy the contents into a new CSS file ("File | New |
New Stylesheet" - really just a
CSS is very powerful and is well worth learning more about. Here's a few
resources I recommend to get going:
http://www.w3schools.com/css/ (good primer)
http://css-discuss.incutio.com/ (be-all end-all CSS reference - probably too
technical for getting started, but if you get serious about CSS, you will
visit this site, guaranteed)
Hope that helps,