Update: So I got the accordion script to work finally. Thanks again, ConradS, for that link!
Next question: Is there anyone willing to give me the CSS so that the toggles display like the example image in my original post?
Here is the current CSS on my page:
.markdown-block p {margin-left:1.5em;}.markdown-block .ui-closed:before { font-family:monospace; content:"+ ";}
.markdown-block .ui-open:before { font-family:monospace; content:"- ";}