◊ LOZENGE UTF-8 character with hex code 25CA

Using HEX code of LOZENGE in HTML file

<span> &#x25CA; </span>

Using Decimal code of LOZENGE in HTML file

<span> &#9674; </span>

Using HEX code of LOZENGE in CSS file for content

span { 
    content: '\25ca';
}