JSFiddle - React, Tailwind, and code Playground

by Lhankor_Mhy

HTML

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.3/dist/css/bootstrap.min.css">
<div class="userClass card-header">test</div>

CSS

.userClass {
            /* !important; */
            background-color: lightgoldenrodyellow;
        }