Map wrap div is full width on left-aligned map

I have a left-aligned map that I'd like to wrap text around, but the auto-generated(I presume) div that wraps the map is full-width, pushing everything below it.

The div has an id="map_map_1079603544232_preview_alignment_container" and no class, or else I could use said class to make sure all similar maps didn't take up the full width of their parent element, as well as adding some much-needed margins to the map.

Any thoughts on how to override this and have text wrap to the left or right of the map? Or just to add a class, I guess?

Thanks! I've got some great maps with custom markers going. Just need these final details.