JSFiddle - React, Tailwind, and code Playground

HTML

<div id="popup-msg">
	<div id="loading">
		<h2>Loading...</h2>
		<h3>Please wait a few seconds.</h3>
	</div>	
	
	<div id="success" title="Hurray,">
		<p>User table is updated.</p>
	</div>
</div>

CSS

.ui-widget.success-dialog {
    font-family: Verdana,Arial,sans-serif;
    font-size: .8em;
}

.ui-widget-content.success-dialog {
    background: #F9F9F9;
    border: 1px solid #90d93f;
    color: #222222;
}

.ui-dialog.success-dialog {
    left: 0;
    outline: 0 none;
    padding: 0 !important;
    position: absolute;
    top: 0;
}

.ui-dialog.success-dialog .ui-dialog-content {
    background: none repeat scroll 0 0 transparent;
    border: 0 none;
    overflow: auto;
    position: relative;
    padding: 0 !important;
    margin: 0;
}

.ui-dialog.success-dialog .ui-widget-header {
    background: #b0de78;
    border: 0;
    color: #fff;
    font-weight: normal;
}

.ui-dialog.success-dialog .ui-dialog-titlebar {
    padding: 0.1em .5em;
    position: relative;
    font-size: 1em;
}

JavaScript

$('#success').dialog({
	height: 50,
	width: 350,
	modal: true,
    resizable: false,
	dialogClass: 'no-close success-dialog'
});