Contain function to Cover Block – How?

Hey

How can I contain content within cover block as opposed to overflow hidden?

As hero I pull a query from a category and only one displays (The newest). This can be both portrait and landscape and I need the full frame to display as contained. Also I have title and author as links on top of this image which works well in cover block…

So is there any css that will do this until fix’ed as a permanent solution?

Any plans to add random function to cover. So that it pulls randomly from a category. Maybe on a timely basis. Fx once per week or month.