Lesson

The architecture of an HTML document is defined by the DOM - document object model-, a tree-like structure that organizes the anatomy of the content of a website into pieces that are either semantically meaningful - such as `<p>` for paragraphs- or structurally meaningful - such as `<div>` and `<span>`-. <br> We will start reviewing html headings.Make an `<h1>` tag in the editor and write the string "hello world" inside of it. <br> Then make a `<h2>` tag in the editor and write the string "my second html heading" inside of it"