How to change text background color and corner radius?

Store Design
2

If you’d like something like this:

Screenshot 2022-06-15 at 09.23.39.png
Screenshot 2022-06-15 at 09.23.39.png913×255 126 KB

Go to edit code > assets > base.css and add this:

#Details-HeaderMenu-5{
    background-color: #ac3834;
    border-radius: 40px;
}