▰ BLACK PARALLELOGRAM UTF-8 character with hex code 25B0

Using HEX code of BLACK PARALLELOGRAM in HTML file

<span> &#x25B0; </span>

Using Decimal code of BLACK PARALLELOGRAM in HTML file

<span> &#9648; </span>

Using HEX code of BLACK PARALLELOGRAM in CSS file for content

span { 
    content: '\25b0';
}