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