Update align_items.start_end for Chrome & Safari (#4549)
Update align_items.start_end for Chrome & Safari (#4549)

It turns out that these properties are not supported yet.

See: https://github.com/mdn/browser-compat-data/issues/4298
See: https://codepen.io/anon/pen/voxqrd

Co-Authored-By: Jeffrey Woldan <7dc746dfc9c77500eb2828095a62c641fb7ba206@geteverwise.com>
mdn/browser-compat-data,chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data