This is a first, a firefox bug, not IE?

The first tab in site navigation is shown with some bottom margin or padding in firefox browser. Shows fine in IE.

CSS is uploaded (in regular ANSI .txt format)

any help?

It's not a bug. Float the <li> instead, and clear the floats properly and it will work correctly.

I have the <ul> floating left. So take that off and float the <li> instead?
add a li {float:left} property?

Then use a clear:left function in my stylesheet that would apply to the next div in my html markup?

You can float both the UL and the LI inside it, although if your UL is the full width of the container, there's little point in floating it.

You need to understand the clearing of floats:
http://css-discuss.incutio.com/?page=ClearingSpace

To tell you the truth ma'am, I only understand about .001% of Cascading Style Sheets (version 1). Never mind CSS2. And forget CSS3.
The thing I do NOT like about <style> documents is: "CSS brings a new take on an old problem. CSS doesn't work so well across differnt browsing platforms." Ruthsarian

Which brings me to this rant:

The "internet" was great when it was British Naval connectors terminated at both ends of a bus line network and developers used Hyper Text Markup programming in DOS (my favorite operating system) ran on a Commodore machine.
But, I can live with HTML 2.0 markup shown through a NN4 browser. (And no. That second version of HTML has nothing to do with ya'll's "WEB 2.0" propaganda!) Oh, and ran on a PentiumI with NT Workstation.

Butt: These new browsers, and new "tools" and plugins, and widgets, and neverending scripts and even more CSS hacks. Now no one speaks the same hypertextmarkupLANGUAGE.
I wrote a "hello world" message in a HTML 4 transitional web document the other day and it didn't even validate@w3.org

~ MattCoops, tile contractor + web design

"CSS brings a new take on an old problem. CSS doesn't work so well across differnt browsing platforms."

With all due respect to Ruthsarian, CSS works quite well most of the time. The differences between browsers are shrinking and there are proven ways to deal with the differences (mostly IE!) that are not at all hard to learn and implement.

I've been working in web design for more than 10 years, so I can see where you're coming from. However, HTML, CSS, and browsers are evolving, slowly, but they are changing. You either accept it for what it is and learn to deal with it, or you get out of the web design business altogether. It can be frustrating to deal with some of the vagaries between browsers, IE of course being the worst offender.

I'd be interested to see your "hello world' that didn't validate. Although HTML 4 transitional is pretty sloppy. You have to realize, too, that the validator itself is not perfect, and neither is validation the be-all and end-all for coding, it helps, but it's not the end goal.

I never really "got into" web design. I went to school for graphic design in late 90s, but dropped out after 4 semesters to start my tile contracting business. The design business is too overpopulated. Anybody with a pencil and a pad can launch into it. There is a surplus of students and even more unemployed. There are a few talented individuals that make it into an agency the rest are left as independent contractors, whom are forced to learn marketing, accounting, and other business practices if they want to earn a living. The rest, (like me) are "weekend warriors" that take on a few design projects a year and work at it for the fun of it while employed full time elsewhere.

In my opinion, designers/developers are adamantly underpaid. Artists pour their heart and soul into their works and are forced to be at the disposal of lowest bidder freelance auctions.

My suggestion to those still motivated, take time after your existing projects to focus on your ideas for a product that may blossom into the next new .com (Google was invented by two College kids [Larry and Sergey] that had a small idea about academia and turned it into something big)