Read the question, write HTML on the right, then Preview or Check.
QuestionHint and solution stay closed until you open them
<details> with <summary>More</summary> and a paragraph Hidden text.
Examples
Expected
details
Hint
- summary is the clickable label.
Show correct code
Peek only after you have tried. You can still Check your own version.
<details>
<summary>More</summary>
<p>Hidden text</p>
</details>
index.htmlLive preview · Check reads the DOM
ResultIdle
Run to see output. Check grades the tests.