Main Section

Section 1 Article 1: HTML

The html provides the structure and the content in two sections, each of which contains two articles. View the outline by copying the html into HTML 5 Outliner

Article 2: CSS

The CSS provides the presentation.
Copy the CSS then click the image above and paste it into the CSS validator.

Section 2 Article 3: JavaScript

The JavaScript creates the validation link in the footer dynamically based on the document URL (location)

Article 4: Sectioning Elements and Headings

<header> and <footer> elements do not require <h1,2,3,> for outlines.