HTML DETAILS AND SUMMERY
The <details> element is the disclosure widget container. The <summary> is the summary or legend for its parent <details>. The summary is always displayed, acting as a button that toggles the display of the rest of the parent’s contents. Interacting with the <summary> toggles the display of the self-labeled summary siblings by toggling the <details>' element's open attribute.
<! DOCTYPE html> <html>         <head> <title> Details & Summary </title> </head> <body> <details> <summary> First </summary> <p>FIrst paragraph</p> </details> <details> <summary>Second</summary> <p>Second paragraph</p> </details> <details> <summary>Third</summary> <p>Third paragraph</p> </details>         <body> <html>  |