Recommends with Attenuation Factor: 0.0006595394Also looking at this pair of tags <div/> inside <th/>

first tag section

<html/>

Categories

  • None.

Contexts in which this element can be used

  • As document's document element.
  • Wherever a subdocument fragment is allowed in a compound document.

Content model

  • A head element followed by a body element.
BrowserWeb HTMLWeb APICanIUse
FirefoxYes1+--
SafariYes1+--
ChromeYes1+--
OperaYes12.1+--
EdgeYes79+--
Edge (Legacy)12+12+--
Internet ExplorerYes5.5+--
Firefox AndroidYes4+--
Safari iOSYes1+--
Chrome AndroidYes18+--
WebView AndroidYes1+--
Samsung InternetYes1.0+--
Opera AndroidYes12.1+--

Result of the ability to include a tag in a tag

No, you can't!
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last tag section

<div/>

Contexts in which this element can be used

Content model

BrowserWeb HTMLWeb APICanIUse
Firefox1+1+--
SafariYes3+--
ChromeYes1+--
OperaYes12.1+--
EdgeYes79+--
Edge (Legacy)12+12+--
Internet ExplorerYes5.5+--
Firefox Android4+4+--
Safari iOSYes1+--
Chrome AndroidYes18+--
WebView AndroidYes1+--
Samsung InternetYes1.0+--
Opera AndroidYes12.1+--