<details>
Disclosure
A box that folds open and shut, working without any JavaScript.
| How to write it | <details></details> |
|---|---|
| Closing tag | </details> |
| Void element | No — it must be closed |
| Common attributes | open, name |
| Category | Disclosure |
How to read this
- Most tags come in pairs, opening and closing. Only tags with no content — img, br — are left unclosed.
- Writing </br> for a void element does nothing useful; the browser ignores it or adds an empty line.
- Appearance is CSS’s job. A tag says what something is; bold or italic is only the consequence.
- Choosing the tag that matches the meaning helps search engines and screen readers alike. Wrapping everything in div throws that information away.
Frequently asked questions
Q. What is the HTML <details> tag?
A box that folds open and shut, working without any JavaScript.
Q. How do you write <details>?
As <details></details>. The opening <details> pairs with the closing </details>.
Q. Which attributes are common on <details>?
open, name are the usual ones.
Q. What group does <details> belong to?
The disclosure group.