Revert "Set heights of child items only"

This reverts commit d7b1a27e1a4b7a26cd871c68fcff3bd38ea84843.
Set heights of child items only

Originally this was setting the heights of all child items across
multiple selectors to be the same, this update makes sure that only the
parents child items heights are matched. If there are multiple parent
items then their childrens height will be equalled separately. Now
Linted!