XHTML 1.0 document conformance

A document in XHTML 1.0 standard must be strictly conformed or with other words it must meet all the criteria written below: It must follow the rules defined by one of the three DTDs...

Differences between XHTML 1.0 and HTML 4.01

HTML 4.01 initially is a predecessor to XHTML 1.0. There are some freedoms on HTML 4.01 that are not allowed in XHTML. Mostly because XHTML is a XML application these rules have to be satis...

XHTML 1.0 elements examples

Important rules regarding elements in XHTML 1.0: Document must have one root element. <html> <body> <...

XHTML 1.0 attributes examples

Important rules regarding attributes in XHTML 1.0: Attributes must be in lower case. BAD <input type="TEXT" /...