I need help creating a html site with this requirement

• A consistent design and color scheme.
  • An external CSS document to control these aspects.
  • CSS applied to a single page.
  • Use of inline styles.
• A consistent navigation between parts of your site.
• At least three external hyperlinks.
• An e-mail link with the subject filled in.
• A form
• The use of alert message on one page.
• JavaScript that adds value to your page. This could be mouse-over events for navigation, a photo gallery, form field validation, performing a calculation in a form (such as adding tax or shipping), et cetera.
• JavaScript additions.
• The preparation of the desktop and mobile versions of your site.