Using basic HTML5 and CSS3, create a series of webpages with a simple structure incorporating a unified theme. The HTML must contain at least the following items:

• The first page will be called "index.html" and be stored under a sub-directory called "assign1" in your public_html area.
• A minimum of 5 HTML pages (including the "index.html" page above), but no more than 10 pages total.
• The webpages need to be interlinked and use a uniform navigation system.
• Hyperlinks to your pages and other websites (both relative and absolute).
• A consistent content theme of your choosing across the whole website.
• All pages must be designed using CSS3 as the page format.
• An external CSS3 file that includes a consistent grid format, background color, and font style(s) for all pages on your website.
• Active email (mailto: ) link to your email address on each page
• Appropriate headings and indention.
• At least two of the four types of lists in Session 1.3.
• Insert a .gif or .jpg image. Graphics of appropriate size, format, and content to reinforce the content of the site.
• It must display acceptably on Chrome and Firefox.