Why can't the tag contain a tag inside it?

Question

As far as I know, this is right:

  
some words

But this is wrong:

  &l         


        

Answer 1

Because the div tag has higher precedence than the p tag. The p tag represents a paragraph tag whereas the div tag represents a document tag.

You can write many paragraphs in a document tag, but you can't write a document in a paragraph. The same as a DOC file.