title: Using CSS in an HTML Editor that doesn't allow the use of CSS classes
body: <p>I am using Moodle to add content to a course. I want to use an accordion using CSS and Javascript just as in the example here (<a href="https://www.w3schools.com/howto/tryit.asp?filename=tryhow_js_accordion" rel="nofollow noreferrer">https://www.w3schools.com/howto/tryit.asp?filename=tryhow_js_accordion</a>). The HTML editor, however, does not recognise the classes - they disappear when the code is saved. The school I working for do not want to support CSS, is there anything I can do to get it working?</p>