JSFiddle - React, Tailwind, and code Playground

HTML

<select name="wgtmsr" id="wgtmsr">
<option value="kg">Kg</option>
<option value="gm">Gm</option>
<option value="pound">Pound</option>
<option value="MetricTon">Metric ton</option>
<option value="litre">Litre</option>
<option value="ounce">Ounce</option>
</select>

CSS

#wgtmsr{
 width:150px;   
}

#wgtmsr option{
 width:100px;   
}