| A | B |
|---|
| HTML | Hypertext Markup Language |
| XHTML | Extensible Hypertext Markup Language |
| HTML Document | a text file that contains elements or tags that tell a browser how to display its content. |
| nesting | the parent-child relationship of elements in a document structure |
| the order in which nested elements are closed | first to open, last to close |
| <HTML> | the document's root element |
| <head> | contains information about the document. |
| <body> | contains the page's content |
| <title> | appears in the browser title bar |
| <h1> to <h6> | heading elements |
| <h1> | largest heading tag |
| <h6> | smallest heading tag |
| <p> | paragraph element |
| container tag | contains content for display and other HTML elements |
| .htm or .html | file extensions |
