JSFiddle - React, Tailwind, and code Playground

HTML

<div>text</div>

CSS

.required {
    background-image: linear-gradient(bottom, #EFD4D0 0%, #EFD4D0 100%);
    background-image: -o-linear-gradient(bottom, #EFD4D0 0%, #EFD4D0 100%);
    background-image: -moz-linear-gradient(bottom, #EFD4D0 0%, #EFD4D0 100%);
    background-image: -webkit-linear-gradient(bottom, #EFD4D0 0%, #EFD4D0 100%);
    background-image: -ms-linear-gradient(bottom, #EFD4D0 0%, #EFD4D0 100%);
    background-color: #EFD4D0;
}

JavaScript

$('div').click(function() {
    $(this).addClass('required'); 
});