⌑ Square lozenge UTF-8 character with hex code 2311

Using HEX code of Square lozenge in HTML file

<span> &#x2311; </span>

Using Decimal code of Square lozenge in HTML file

<span> &#8977; </span>

Using HEX code of Square lozenge in CSS file for content

span { 
    content: '\2311';
}