̀ GRAVE ACCENT UTF-8 character with hex code 0300

Using HEX code of GRAVE ACCENT in HTML file

<span> &#x0300; </span>

Using Decimal code of GRAVE ACCENT in HTML file

<span> &#768; </span>

Using HEX code of GRAVE ACCENT in CSS file for content

span { 
    content: '\0300';
}