Short Storyline 3 interactions to embed in WordPress, any pitfalls to avoid?

Hi all.  I've offered to help a charity organisation by creating (Storyline 3) simple, individual games or interactions to embed in their WordPress website, aimed at engaging young people.  Will they need a plug in (which one?) and are there any interactions or features I should avoid to ensure the items I make for them work? Are there any other issues to think about, e.g. player size or file size? Thanks in advance.

Pat K