Define a dynamic HTML document.

Dynamic HTML stands for Dynamic HyerText Markup Language. It is a combination of HTML, CSS, JavaScript or VB Script, and DOM ( Document Object Model). It is used to create dynamically changing websites, which include animations, text effects, dynamic styling, etc. It is designed to enhance the user\'s experience while visiting the website.

DHTML has the following features:

1. It allows users to dynamically change page content.

2. It has dynamic styling using which user can change font, size, colour, etc.

3. It has dynamic placement of elements on the page.