ɑ LATIN SMALL LETTER ALPHA UTF-8 character with hex code 0251

Using HEX code of LATIN SMALL LETTER ALPHA in HTML file

<span> &#x0251; </span>

Using Decimal code of LATIN SMALL LETTER ALPHA in HTML file

<span> &#593; </span>

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

span { 
    content: '\0251';
}