🖆 Pen over envelope UTF-8 character with hex code 1F586

Using HEX code of Pen over envelope in HTML file

<span> &#x1F586; </span>

Using Decimal code of Pen over envelope in HTML file

<span> &#128390; </span>

Using HEX code of Pen over envelope in CSS file for content

span { 
    content: '\1f586';
}