Xavier Nunez CIS 212 Lab07 XHTML is more strict than HTML4. For example XHTML is case sensitive when it comes to inputting tags and attributes. Also all tags must be closed properly and inline elements must be inside of block elements. Empty tags must also be closed with a / before the closing bracket. The page must also have the XML declaration as the first entry followed by the DOCTYPE declaration. I found it interesting that most of the problems listed are not real major problems. It seems that HTML5 incorporates a lot of the XHTML standards. The only worries I see is the support of HTML5 by browsers. I am sure that all browsers will eventually support HTML5 within the near future.