Revert "remove descendent selectors, which were a crutch early in the new design"
Revert "remove descendent selectors, which were a crutch early in the new design"

This reverts commit 466538756aa174291d813ab529fae4f3aa81fcfe.

alistapart/AListApart,alistapart/AListApart,alistapart/AListApart,alistapart/AListApart