The <details> tag tells about additional details that user can view or hide on demand. By default, the content of the tag is not shown.
We should write this tag with <summary> tag but it is not necessary. <summary> tag is used for the user-visible title which is clickable (it works like a heading). when users clicked on it. Content written inside appears and close onclick.
The <details> and <summary> tag comes in pairs. Content is written between the opening (<details>) and the closing (</details>) tags.
<title> Details tag </title>
<summary>Copyright 2014-2019 | Coding Tag.</summary>
<p> - By Coding Tag. All Rights Reserved.<br>All content and graphics on this web site are the property of the codingtag.com</p>
<p><b>Note:</b>The details tag is not supported in Internet Explorer browser.</p>