JSFiddle - React, Tailwind, and code Playground

HTML

<table id="main">
    <tr>
        <td>hello</td>
        <td>world</td>
    </tr>
</table>

CSS

body { background-color: red; margin: 0; padding: 0;}
#main { padding: 0; margin: 10px; background-color: blue;}

JavaScript

$(function () {
    alert($("#main").css('margin'));
});