Common web page / blog post applications where concealing text until the viewer clicks include:
- table of contents
- long details not all readers are interested in at that point in the article
<details> <summary>click for spoilers</summary> <ul> <li>The season finale for Season 1 showed ...</li> <li>And season 2 opener revealed ...</li> </ul> </details>
click for spoilers
- The season finale for Season 1 showed ...
- And season 2 opener revealed ...