🛇 Prohibited UTF-8 character with hex code 1F6C7

Using HEX code of Prohibited in HTML file

<span> &#x1F6C7; </span>

Using Decimal code of Prohibited in HTML file

<span> &#128711; </span>

Using HEX code of Prohibited in CSS file for content

span { 
    content: '\1f6c7';
}