HTML and XHTML are the markup languages used to create a solid foundation for your website or web application, and articles in this category generally touch upon the semantics and accessibility aspects of marking up web pages.
There is no such thing as an alt tag in HTML. Alt is an attribute, required for the img element and specified in the img tag.
Information that may help you choose between HTML and XHTML for the next website you produce.
Covering two approaches to designing for mobile devices: handheld stylesheets and mobile-specific sites.
HTML and CSS are not as easy as some people like to think. They are easy to get started with, but very difficult to master.
Footnotes don’t exist in HTML, but you can fake them. Or not.
A good summary of techniques for specifying the language of content.
An article that explains the difference between tags, elements, and attributes in HTML.
An example of microformats that have a real world use today.
A very comprehensive article on the correct use of HTML tables.
A discussion on whether XHTML should have draconian error handling or not.
The W3C’s Quality Assurance Group explains the downside of custom DTDs.
Questioning width and height values for images.
How to install the W3C validator and use it to batch validate entire sites.
Handy for when you need to look up something in a DTD.
HTML is next to dead, killed by non-conforming parsers.
An introduction to structural HTML and how it helps preparing a document for CSS styling.
An explanation of what makes a browser treat XHTML as XHTML.
The debate on HTML vs. XHTML continues.
HTML elements describe the meaning of content, not its looks.
How to choose the appropriate language code(s) and how to use them.