Mobile layout, color scheme, HTML semantics.

Initial web site configuration. A cursory creation of the web sites
pertaining elements.

Layout:
Only Mobile Layout so far!
* flex box for fluid response
* Sticky footer
* Large mast header

Color:
Based on Sketch mockup. Refer to yellow notepad notes.

Semantics:
HTML should use latest possible elements while still supporting last two
browser client versions.

Add:
* Twitter Widget (index.html)