The first answer is obvious: Yes. They are different markups, so of course they are different.
What about the approach of the manufacturers and browser developers? Are they doing anything differently from how they managed WML? Well, manufacturers might not be happy about this, but unfortunately my answer is “no, it’s not SO different”.
It’s a little disappointing to see that every single browser does whatever he likes and differently from ther other (AGAIN). And this story is not NEW! We have seen it with web browsers, we have seen it with WML browsers and now we see it again with xHTML browsers. Didn’t anybody notice that since there was a domination of web browsers all sites looked good? I’m not saying that i’d be happy to see a single browser dominance (while it would make my life easier), but at least they could try to make pages look the same. Why agree on a thousand tags and then support 300 hundreds? Agree on 310 and make 300 work well and leave out the 10 least important!
I promise next week I’ll post some markup examples and the different layouts. They are not TOTALLY different, but they all present little differences, one doesn’t support the background color, the other uses different colors for links, the other doesn’t like fieldsets… OH!