⊎ MULTISET UNION UTF-8 character with hex code 228E

Using HEX code of MULTISET UNION in HTML file

<span> &#x228E; </span>

Using Decimal code of MULTISET UNION in HTML file

<span> &#8846; </span>

Using HEX code of MULTISET UNION in CSS file for content

span { 
    content: '\228e';
}