This is paragraph 1. It's style is specified by a <style> element within the <head> element of this document.
This is paragraph 2. It's style is specified via an external style sheet (BasicCSS.css) specified via a <link> element within the <head> element of this document.
This is paragraph 3. It's style is also specified via an external style sheet (BasicCSS.css) specified via a <link> element within the <head> element of this document.
This is paragraph 4. It's style is specified with a "style=" attribute directly in the <p> element.