⚿ SQUARED KEY UTF-8 character with hex code 26BF

Using HEX code of SQUARED KEY in HTML file

<span> &#x26BF; </span>

Using Decimal code of SQUARED KEY in HTML file

<span> &#9919; </span>

Using HEX code of SQUARED KEY in CSS file for content

span { 
    content: '\26bf';
}