The <details> and <summary> Elements in HTML5 are important for creating collapsible content sections. The <details> element acts as a container for content that can be hidden or revealed, and the <summary> provides a visible heading or label for the collapsible section.

When users click on the <summary> heading, it toggles the visibility of the content within the <details> element, offering a simple and interactive way to organize and present information on a webpage.

Importance of <details> Tag

• Enables neat organization of content into collapsible sections.
• Gives users the option to reveal or hide specific content.
• Condenses lengthy content for improved mobile usability.
• Helps establish a clear hierarchy for content presentation.
• Implements progressive disclosure for a user-friendly experience.
• Improves readability by grouping related information.

Syntax

<details>
        <!-- Collapsible Content Goes Here -->

        <summary>Visible Heading</summary>

        <!-- Additional Content -->
</details>

Importance of <summary> Tag

• Provides a visible and clickable heading for collapsible content.
• Enhances accessibility by offering an identifiable label.
• Facilitates user interaction by toggling content visibility.
• Ensures a consistent and uniform design for expandable sections.
• Contributes to a user-friendly navigation experience.
• Supports a structured and organized presentation of information.

Syntax

<details>
     <summary>Visible Heading</summary>

     <!-- Collapsible Content Goes Here -->
</details>