◾ BLACK MEDIUM SMALL SQUARE UTF-8 character with hex code 25FE

Using HEX code of BLACK MEDIUM SMALL SQUARE in HTML file

<span> &#x25FE; </span>

Using Decimal code of BLACK MEDIUM SMALL SQUARE in HTML file

<span> &#9726; </span>

Using HEX code of BLACK MEDIUM SMALL SQUARE in CSS file for content

span { 
    content: '\25fe';
}