The <details> tag in HTML5 is used to show the details of the particular topic.
<html>
<body>
<details>
<summary>C# Corner</summary>
<p>Premier community for C#, ASP.NET, Silverlight, WPF, Windows Phone, Windows Forms and .NET tutorials, articles, blogs, forums, news, and resources.</p>
</details>
</body>
</html>
Here we take a Summary tag. It is used to specify a visible heading for the details.
OUTPUT
After we click on it:
New feature in HTML5:
HTML5 introduces open attribute in the details tag. This property is used when we want that the details of the content is always visible to us.
<html>
<body>
<details open="open">
<summary>C# Corner</summary>
<p>Premier community for C#, ASP.NET, Silverlight, WPF, Windows Phone, Windows Forms and .NET tutorials, articles, blogs, forums, news, and resources.</p>
</details>
</body>
</html>
OUTPUT: