☡ CAUTION SIGN UTF-8 character with hex code 2621

Using HEX code of CAUTION SIGN in HTML file

<span> &#x2621; </span>

Using Decimal code of CAUTION SIGN in HTML file

<span> &#9761; </span>

Using HEX code of CAUTION SIGN in CSS file for content

span { 
    content: '\2621';
}