Div: Creates the divider between different text that you can customize.
HTML: Hypertext Markup Language
Alignment: How things are positioned on a page.
Wrapper:Backgroung box of the div.
EXTERNAL: If you want all pages to look the same
exif you want all headers on all pages or most to look a certain way
INTERNAL- if you want a page to look special
Ex: you want a text on a certain page to look a certain way