[style] .site-header proportion change above 80em
[style] [structure] new .back-top implementation
[style] change for small-screen menu and title .site-header
[style] .site-header title proportions for 80em+
[style] .back-top fixes for larger screens
[style] .back-top proportions
[style] .site-footer proportion fix for large screens
[style] CSS reorganization (joining header and footer styles)
[style] [structure] new .alt-nav (back-top plus home)
[style] [fix] proportion and stroke adjustments – .back-home svg
[style] [fix] .back-home logo svg fix
[style] larger .alt-nav; reversed temporary colors
[style] .back-home svg padding adjustment
[style] taller top/bottom padding for small-screen .site-info
[style] provisional color changes for navigation
Merge pull request #28 from opattison/2014-11-19-typography-and-color

Style enhancements – resolves #29
Merge branch 'master' into 2014-11-19-content