▯ WHITE VERTICAL RECTANGLE UTF-8 character with hex code 25AF

Using HEX code of WHITE VERTICAL RECTANGLE in HTML file

<span> &#x25AF; </span>

Using Decimal code of WHITE VERTICAL RECTANGLE in HTML file

<span> &#9647; </span>

Using HEX code of WHITE VERTICAL RECTANGLE in CSS file for content

span { 
    content: '\25af';
}