∮ CONTOUR INTEGRAL UTF-8 character with hex code 222E

Using HEX code of CONTOUR INTEGRAL in HTML file

<span> &#x222E; </span>

Using Decimal code of CONTOUR INTEGRAL in HTML file

<span> &#8750; </span>

Using HEX code of CONTOUR INTEGRAL in CSS file for content

span { 
    content: '\222e';
}