The <details> element is a control that toggles additional information in and out of view. Use this tag together with the <summary> element in order to customize the text that the details tag has always visible to the user.
Note: This element is in jeopardy of being removed from HTML.
<details>Here are the toggled details</details>open in code editor
<details open="open">Here are the toggled details</details>open in code editor