HTML and XHTML:
Research and identify two fundamental differences between HTML and XHTML. I need to provide examples: Find at least two HTML tags that are not valid in XHTML. What are some ways I can check to ensure that my code is valid XHTML? In answering these questions, be sure to identify what the function of the tag is that appears atop web page source codes and identify some of the different doctypes available to me in XHTML and what they mean.