JSFiddle - React, Tailwind, and code Playground
HTML
<div class="custom-select" style="height: 100px; width: 100px; background:red">
<select id="operator_select">
<option value="1">1</option>
<option value="2">2</option>
<select>
</div>
JavaScript
$(function(){
$(".custom-select").click(function(){
$(this).find('select').trigger('click');
});
});