⊿ RIGHT TRIANGLE UTF-8 character with hex code 22BF

Using HEX code of RIGHT TRIANGLE in HTML file

<span> &#x22BF; </span>

Using Decimal code of RIGHT TRIANGLE in HTML file

<span> &#8895; </span>

Using HEX code of RIGHT TRIANGLE in CSS file for content

span { 
    content: '\22bf';
}