Edit fiddle - JSFiddle - React, Tailwind, and code Playground

JSFiddle - React, Tailwind, and code Playground

HTML

<select>
    <option>--</option>
    <optgroup label="Cars">
        <option value="1">Audi TT</option>
        <option value="2">Porsche carrera gt</option>
    </optgroup>
    <optgroup label="Bikes">
        <option value="1">Hayabusa</option>
        <option value="2">Suzuki GSXR</option> 
    </optgroup>    
</select>

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