valid-xhtml

tfooter doesn't validate for xhtml?

Hello, I had my webpage validated for xhtml transitional till I added this table (see below). Since then it doesn't validate and says " document type does not allow element "tfoot" here <tfoot> The element named above was found in a context where it is not allowed. This could mean that you have incorrectly nested elements -- suc...

Which HTML tags have no content

Some HTML tags like br and hr have no content and cannot have a closing tag. What is the complete set of these tags? ...

How can I validate optional HTML closing tags and missing /'s?

Are there any freely available tools that would check for things like a missing </p> or <br> (instead of <br />)? Thanks! ...

Developing valid xhtml document from unformed html

I want to develope the valid xhtml doc the input doc is not well formatted i managed to correct some errors but stuck up in condition like <span>......<p></span>...</p> there can be any tags in place of span and p......but condition is as mentioned i want to handle this condition i m new in .net c# plz do the needful.... thanx. ...

Is it valid HTML5 to use a single tag for a div?

For example: <div/> instead of <div></div>. I did this and apparently the HTML5 validator passed this as valid. I was wondering it this is actually true? PS: I'm serving page as application/xhtml+xml ...