`below` elements are missing `width: 100%`

[opsb]

trafficstars

See https://ellie-app.com/3KQqMMWhSZxa1/0

The generated markup for below uses two intermediate divs. The first has it's width set to 100% but it's child does not causing the below element to not fill the full width. It seems 100% width was the intention here but was lost when the second intermediate div was introduced.

Implementation at https://github.com/mdgriffith/style-elements/blob/754be51551c6bccaa10bdf2b93ab8a56bce943f2/src/Element/Internal/Adjustments.elm#L98