There are three types of CSS styles:
An internal style sheet is a style sheet that is contained in the HTML document, and with which there is no external way of styling.
Every styling part will be written in the same HTML document.
In the inline style sheet, the styles are directly added inside the element. We can add all the style attributes directly inside the element. No external file is required for inline styling.
In the external style sheet, we add all of our styling parts (CSS) in some file and name it with the .CSS
extension. Then, we link it to our HTML page.
Styling is done in an external file in the external style.