HTML open Attribute - Lena Design

The HTML open attribute defines that the information should be visible by default.

The HTML open attribute can be used on the following element:

Syntax:

<details open>

Example:

<!DOCTYPE html>
<html>
<body>

<details open>
  <summary>HTML</summary>
  <p>HTML defines the structure of the web page.</p>
</details>

</body>
</html>

Output:

The example shows a details element that is visible by default:

HTML

HTML defines the structure of the web page.

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