Can we set a minimum height for UI Accordion items?

Can we set a minimum height for UI Accordion items?


Is is possible to prevent accordion items from closing completely, so
they still reveal a little of their content when closed?
I'm using a standard <dl> list with a <dt><dd> arrangement for each
item.
A bit of background: The <dd> elements must show some of their text
content even when closed. Clicking the dt or dd will reveal the whole
content.
(I suppose one solution would be to use the closed-style of the dt to
show a little content in it when the dd is hidden, but that requires
the text content to be repeated which is bad for accessibility, though
perhaps it could be added using js.)
Many thanks
George