ȣ LATIN SMALL LETTER OU UTF-8 character with hex code 0223

Using HEX code of LATIN SMALL LETTER OU in HTML file

<span> &#x0223; </span>

Using Decimal code of LATIN SMALL LETTER OU in HTML file

<span> &#547; </span>

Using HEX code of LATIN SMALL LETTER OU in CSS file for content

span { 
    content: '\0223';
}