Suppose you want to add an arrow to List Simple Grid items, like this
You can follow these steps.
#1. Use this code to Website > Website Tools > Code Injection > Header (or Page Header Code Injection). If the site doesn’t support Code Injection, you can edit page > Add a Block > Choose Code > Paste same code.
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.1.1/css/all.min.css" integrity="sha512-KfkfwYDsLkIlwQp6LFnl8zNdLGxu9YAA1QvwINks4PhcElQSvqcyVLLD9aMhXd13uQjoXtEKNosOWaZqXgel0g==" crossorigin="anonymous" referrerpolicy="no-referrer" />
#2. Use this code to Website > Website Tools > Custom CSS
div.list-item-content__description:after {
content: "\f0a9";
font-family: "Font Awesome 5 Free";
font-weight: bold;
font-size: 18px;
}
#3. Result.