Adding Superscript to page menu links

Site URL: https://www.zacbutchery.com/

Hi contributors, 

I am looking to insert a superscript 'New' on my menu bar on 'Our Recipes' to notify people of new content whenever there are any. 

Is there anyway I can do this, please?

Thank you. 

 

Add to Design > Custom CSS

div.header-nav-item:nth-child(3) a:after {
    content: "NEW";
    font-size: 10px;
    position: relative;
    top: -10px;
}