change "$dt-width" Sass variable name to "$inner-content-width"
change $tab-width Sass variable name to $tablet-width
clean up typo comments in grunt/cssSource/_base.scss
spaced out comment paragraphs in grunt/cssSource/_retinaMediaQuery.scss
updates to  grunt/cssSource/_base.scss (see message)

'add $inner-footer-width variable...clean up comments & whitespace.
change "$inner-footer-width" to "$inner-footer-width-desktop" in grunt/cssSource/_base.scss
update "a.pagination-link" class in both mobile Sass files
build Sass function to determine gutter width in footer columns

create @function getGutterWidth() in sass to calculate vertical space between footer columns on the site's desktop version only. variables & functions defined in grunt/cssSource/_base.scss...function applied in grunt/cssSource/_desktopStyles.scss.
update footer bg image
major 'styles.min.css' updates (see message)

Finalize site color palette and reference single colors in Sass variables. remove old variables and styles. Cleaned up white-space, started builiding 'letterpress'-type copy in footer headers.