style: extend %nav-menu, as SASS is picky with extending nav.menu now
style: extend %nav-menu, as SASS is picky with extending nav.menu now

garrett/jekyll-springboard-community,garrett/jekyll-springboard-community,garrett/jekyll-springboard-community,garrett/jekyll-springboard,garrett/jekyll-springboard,garrett/jekyll-springboard,garrett/jekyll-springboard-community,garrett/jekyll-springboard