Recommends with Attenuation Factor: 0.0005619655Also looking at this pair of tags <form/> inside <div/>
  • The parent tag <form/> with the Content model section and the child tag <details/> with the Categories section have matches: Flow content

first tag section

<details/>

Contexts in which this element can be used

Content model

BrowserWeb HTMLWeb APICanIUse
Firefox49+49+--
Safari6+6+--
Chrome12+10+--
Opera15+15+--
Edge79+79+--
Edge (Legacy)NoNo--
Internet ExplorerNoNo--
Firefox Android49+49+--
Safari iOS6.1+6+--
Chrome AndroidYes18+--
WebView AndroidYes37+--
Samsung InternetYes1.0+--
Opera Android14+14+--

Result of the ability to include a tag in a tag

Yes, you can!
0
0
new
list [0]

last tag section

<form/>

Contexts in which this element can be used

Content model

BrowserWeb HTMLWeb APICanIUse
FirefoxYes1+--
SafariYes3+--
ChromeYes1+--
OperaYes8+--
EdgeYes79+--
Edge (Legacy)12+12+--
Internet ExplorerYes5.5+--
Firefox AndroidYes4+--
Safari iOSYes1+--
Chrome AndroidYes18+--
WebView AndroidYes1+--
Samsung InternetYes1.0+--
Opera AndroidYes10.1+--