What guidelines must I adhere to for W3 Validation?

There are several options available for W3 validations

Such as HTML - XHTML1.0, XHTML - Transitional, XHTML - Strict and

for CSS - CSS - 2.0, CSS - 3.0 ...

Which one would be your recommendation to follow? Please share your suggestions.

Answer №1

Confirm your document adheres to the appropriate validation standards. Ensure you validate as HTML if that is your chosen language, or as XHTML if that is what you are working with. Take some time to review the specifications outlined by w3 for each type to determine which path aligns best with your goals.

Answer №2

For new websites, I recommend using HTML5, HTML4 Strict, or at most XHTML1 Strict. Avoid the temptation of Transitional versions as you may face regrets in the future.

In terms of CSS, I prefer CSS3, but CSS2.1 is also a solid choice.

Answer №3

In my opinion, the best choices for web development are:

HTML 4.01 Strict
CSS 2.1

Many in the industry share this sentiment as XHTML is considered flawed. This has led to W3C halting the development of the XHTML2 standard in favor of HTML5, which may not be widely supported by browsers for several more years.

Another issue with XHTML is the requirement to send it with a MIME type of application/xhtml+xml. However, Internet Explorer 6 (possibly 7 and 8 as well) fails to render pages sent in this format. This means developers must choose between sending text/html for IE and text/html+xml for other browsers, or completely disregarding the correct MIME type altogether.

http://www.w3.org/News/2009#item119 - Information on W3C discontinuing XHTML2 development

- Detailed article on XHTML by Ian Hickson, known for creating Acid2 and Acid3 tests and being part of WHATWG

Answer №4

According to statistics, CSS 2.x is used in a whopping 99% of cases.

Are you familiar with the concept of DOCTYPE? HTML and XHTML are actually distinct languages. If you're using m, then it's most likely XHTML.

I have a knack for simplifying things to the extreme. Perhaps it's best to explore further on the web.

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