Using the Expand Macro
Implementing a lightweight page-design option for 'hiding' text behind a click-to-open teaser.
This standard built-in Confluence macro is an easy-to-implement option to hide information until it's needed by the user, with a "click to expand" text snippet.
Use h4 for section headings
If you don't want numbers in the section headings, simply remove the "numbered" class from this block.
Note/Tip/Warning/Info blocks below are collapsed by default. If you want to use any of these, try to keep to just one per page. You may use two if necessary, but in general, try to limit these.