JSFiddle - React, Tailwind, and code Playground
HTML
<div style="position: absolute; left: 10px;
bottom: 10px; z-index: 100000;
visibility: visible; display: block;
color: rgb(255, 255, 255);
text-shadow: none; font-family: sans-serif;
font-size: 10px; font-weight: bold;
padding: 2px; border: 1px solid rgb(68, 0, 0);
background-color: rgb(221, 0, 0);">
hi all users
</div>
JavaScript
$('div:contains("hi all users")').css('display', 'none');