Focus Checkpoint

Be prepared, the next video is 3 mins long but goes over a lot.

You don't need to remember or follow every point made in this video (but you should feel free to re-watch it if you want). The important things to take away from this are:

• HTML and CSS are both "languages"
• HTML controls the "structure" of a web page
• CSS controls the "style" of a page (how it looks).
• When programmers talk about the "DOM" (Document Object Model) they are talking about the tree-like structure of a page.

To learn more about what a "tree-like structure" means, read the first two paragraphs of the wikipedia article on Tree Structures.