BASICS

What is XHTML all about and how is it similar/different to HTML?

• Introducing XHTML
• HTML vs XHTML

XHTML SYNTAX

More rules to abide to in order to write a correct XHTML document or when coverting your HTML document to a XHTML document.

• Case-sensitivity of attributes
• Quotation marks around values
• Image 'alt' attribute
• Use 'id' attribute, not 'name'
• DOCTYPE declaration

XHTML DOCUMENT TYPE DEFINITIONS (DTD)

In XHTML, the document type (DOCTYPE) of your site must be specified at the beginning of your source code. Learn which document type you should use for your site.

• Strict DTD
• Transitional DTD
• Frameset DTD

XHTML VALIDATION

It is important to validate your XHTML document once you're done coding it, find out where you can validate your site.