<details>

The HTML <details> element is used as a disclosure widget from which the user can retrieve additional information.

Attributes

This element includes the global attributes.

open

This Boolean attribute indicates whether the details will be shown to the user on page load. Default is false and so details will be hidden.

Example

<details>
  <summary>Some details</summary>
  <p>More info about the details.</p>
</details>
<details open>
  <summary>Even more details</summary>
  <p>Here are even more details about the details.</p>
</details>

Result

Example with styling

Following the more recent spec, Firefox makes the summary element display: list-item and the marker can be styled the same way list items can be styled. Following an older spec, Chrome and Safari have a custom ::-webkit-details-marker pseudo element which can be styled.

For cross browser compatible styling hide Firefox's marker by setting summary { display: block } and Chrome and Safari's marker by setting ::-webkit-details-marker {display: none;}. Styling can then be applied in a way appropriate to the necessary styles. The example below uses CSS generated content to add the marker back.

HTML

<details>
  <summary>Some details</summary> 
  <p>More info about the details.</p> 
</details>

CSS

summary {
  display: block;
}
  summary::-webkit-details-marker {
  display: none;
}
summary::before {
  content: '\25B6';
  padding-right: 0.5em;
}
details[open] > summary::before {
  content: '\25BC';
}

Result

Specifications

Browser compatibility

See also

• <summary>