JSFiddle - React, Tailwind, and code Playground

HTML

<div>Texto</div>
<div>Texto</div>
<div>Texto</div>
<div style="font-style:italic;">Texto</div>
<div>Texto</div>
<div>Texto</div>
<button>PĂ´r a verde!</button>

CSS

div{
    color: blue;
    background-color: #ccf;
}
div:hover{
    color:red;
    background-color: #fcf;
}

JavaScript

$('div').css("font-size", "36px");
$('button').click(function(){
    $('div').css("cssText", "color: green !important;")
});