∄ THERE DOES NOT EXIST UTF-8 character with hex code 2204

Using HEX code of THERE DOES NOT EXIST in HTML file

<span> &#x2204; </span>

Using Decimal code of THERE DOES NOT EXIST in HTML file

<span> &#8708; </span>

Using HEX code of THERE DOES NOT EXIST in CSS file for content

span { 
    content: '\2204';
}