Because it separates content from presentation, XHTML lets you simultaneously develop your Web apps for traditional and mobile devices while maintaining a consistent look and feel.

This week’s theme for the Tutorial o’ the Day is XHTML. But because that’s a pretty broad category, Monkey Bites reader Bluephoenix suggested we specifically focus on tutorials that help you ...

XHTML with CSS1 is probably the best bet right now. It'll future-proof your site a bit, while still looking good in any reasonably modern browser (IE5, Mozilla, etc.) And you can do pretty much ...