The previous HTML version tags are always useful, but few tags are removed in HTML5 and few tags are introduce in HTML5. You use tags to create HTML elements , such as paragraphs or links. The marquee is a non-standard HTML tag which was used to create a scrolling text or an image. The HTML specification has a lot of legacy tags that can still be used, and will still work, but the simple fact is, there is usually a better alternative out there. Add the video URL to the element by using either the src attribute of the