JSFiddle - React, Tailwind, and code Playground
by ericf
HTML
<div id="style" style="z-index: auto">style</div>
<div id="style-10" style="z-index: 10">style 10</div>
<div id="css">css</div>
CSS
#css {z-index: 100}
JavaScript
$(document).ready(function () {
alert($('#style').css('zIndex'));
alert($('#style-10').css('zIndex'));
alert($('#css').css('zIndex'));
});