This particular form control is wildly inaccurate across browsers, so
we're removing the `height` and `line-height`, but adding `display:
block` so it renders similarly to our other inputs.
Restores `font-size` and more to the `<select>` element while also
changing from `min-height` to `height` for input sizing.
Fixes#8520 as opened by @ShaunR (would've merged that PR but I moved
everything around right before).
