≂ MINUS TILDE UTF-8 character with hex code 2242

Using HEX code of MINUS TILDE in HTML file

<span> &#x2242; </span>

Using Decimal code of MINUS TILDE in HTML file

<span> &#8770; </span>

Using HEX code of MINUS TILDE in CSS file for content

span { 
    content: '\2242';
}