ℵ ALEF SYMBOL UTF-8 character with hex code 2135

Using HEX code of ALEF SYMBOL in HTML file

<span> &#x2135; </span>

Using Decimal code of ALEF SYMBOL in HTML file

<span> &#8501; </span>

Using HEX code of ALEF SYMBOL in CSS file for content

span { 
    content: '\2135';
}