∼ TILDE OPERATOR UTF-8 character with hex code 223C

Using HEX code of TILDE OPERATOR in HTML file

<span> &#x223C; </span>

Using Decimal code of TILDE OPERATOR in HTML file

<span> &#8764; </span>

Using HEX code of TILDE OPERATOR in CSS file for content

span { 
    content: '\223c';
}