Quiz (Question Set)

When I add the Quiz to my page there are very dim outlines of button sized rectanges with rounded corners above and below the question form adding a lot of white space between elements above and below.   Is there any way to review them so I can get text closer to the question?  thnx

I see Question Set as a possible content type under examples and downloads.

However, when I use the editor on h5p.test.schulcloud-thueringen.de I do not see this content type in the drop-down selection.

Can anyone please advise.

Many Thanks