<!DOCTYPE html>
<meta charset="utf-8">
<title>Reference: Compute kind of widget - fallback - select-dropdown-box</title>
<style>
    #container { width: 500px; }
    #select-dropdown-box { appearance: none; appearance: menulist-button; }
</style>
<div id="container">
    <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
</div>
