🐆 Leopard UTF-8 character with hex code 1F406

Using HEX code of Leopard in HTML file

<span> &#x1F406; </span>

Using Decimal code of Leopard in HTML file

<span> &#128006; </span>

Using HEX code of Leopard in CSS file for content

span { 
    content: '\1f406';
}