JSFiddle - React, Tailwind, and code Playground
HTML
<div class="container blue">test</div>
CSS
.container {
border:1px solid white;
color:white;
}
.blue {
background:blue;
}
.red {
background:red;
}
JavaScript
var color = $('.container').css('background-color');
$('body').css('background-color', color);