I know that styles differ in different browsers, but do they differ on PC's and Mac's.
Example: Is Firefox the same on a Mac and a PC?

Chris23,
Styles can differ on every machine, dependant upon the configuration per user.  For example, people may turn up the text size because their eyes can't handle very small text, etc.  Typically people on mac have a few options as far as browsers go - Safari, firefox, opera and a few smaller named browsers.  Each browser interprets a webpage differently.  As the web 2.0 movement is leading to more standards compliant techniques, there is becoming less of a difference.  The trick is to adhere to strict style standards.  If you can successfully accomplish this, you will be able to display your work across as many browsers as possible.  If this answer is too abstract, feel free to ask more specific questions on a per answer basis, and I, as well as other people in this great community will do their best to help you find a solution!

Yes I understand styles differ on every machine.  However, I was just curious if I looked at a page in Firefox on a PC, will it look that same as if I looked at it in Firefox on a Mac? And the same with other browsers.

They will mostly be the same(99% of the time), but there are some instances where there are differences.
It just depends on what you are doing. You should never expect it to be the same. (I think that's a good mantra to keep with every project I do.)

Thanks for the reply jernigani....
yea I think it's a good idea to just expect that nothing will look the same in every browser.

There will be subtle differences, you'll know that there is something wrong when there is a very noticeable difference. Something i ran into lately, this thread reminded me of that.

I use both a mac and a pc frequently, and the only differences I find are due to subtle screen resolution differences (I have a widescreen windows laptop and an imac G3, if you want to know!). Even so, these differences are just through things becoming a bit stretched on my laptop - with it being widescreen. I use FF on both machines.
Even so, always check your design on as many modern browsers as you can, on as many modern platforms as you can. Then try going back in time to the older browsers and seeing what quirks arise!

Is using percentages the only was to make sure your screen fits no matter what screen resolution is used or pc vs. mac.

st3v373 wrote:

Is using percentages the only was to make sure your screen fits no matter what screen resolution is used or pc vs. mac.

No.. you can use 'ems' as a unit of measurement as well...