Squashed 'shared/' changes from 1dd36cc..6f0b4b2

6f0b4b2 nav snippet
f1bac88 fix nav styles
dbd328e changed footer

git-subtree-dir: shared
git-subtree-split: 6f0b4b25d0c903b4882583cb41258cddf3432fa2
Merge commit 'fa922992ecfa2e445dc154b75e6b218feefb0579' into redesign
update example 1
add nav.js snippet