JSFiddle - React, Tailwind, and code Playground

HTML

<div id="main">
    			<div class="ui-widget-header ui-corner-top">
    				<ul>
    					<li><a href="#tabs-1">My Databases</a></li>
    					<li><a href="#tabs-2">Database Stats</a></li>
    				</ul>
    			</div>
    			
    			<div id="tabs-1" class="tabs3">
    				<p>Database stats</p>
    			</div>
    			
    			<div id="tabs-2" class="tabs3">
    				<p>You could not be registered due to a system error. We apologize for any inconvenience.</p>
    			</div>
    </div>

CSS

#main {
    margin-top: 50px;
    position: relative;
    padding: 0;
}
.ui-tabs-nav {
    background-color: #222 !important; /*To overwrite jquery-ui.css*/
    height: 30px;                        /*To stop nav block scaling of tab size*/
}

.ui-tabs .ui-tabs-nav {
    margin: 0;
    padding: 0.2em 0.2em 0;
    border: none;
    background: none;
    border-radius: 2px 2px 0 0; /*To affect only top corners*/
}

.ui-tabs .ui-tabs-nav li {
    position: relative;    /*To overwrite jquery-ui.css*/
    top: -10px !important;  /*To overwrite jquery-ui.css*/
    border: none;
	margin: 0 0 -5px 0;
    background: none;
}
.ui-tabs-anchor{
    color: white !important;                  /*To overwrite jquery-ui.css*/
    text-decoration: underline !important;    /*To overwrite jquery-ui.css*/
}
#main ul.ui-widget-header, #main ul.ui-widget-content, #main ul.ui-state-default, #main ul.ui-state-hover {
    background: none;
    border: none
}

#main .ui-tabs-active a {
   -moz-border-bottom-colors: none;
   -moz-border-left-colors: none;
   -moz-border-right-colors: none;
   -moz-border-top-colors: none;
   background-color: white;        /*To make it looks like on example pic, it is possible do do with it whatever you want*/
   border-color: #CCCCCC;
   border-style: solid;
   border-width: 1px 1px 0;
   border-radius: 5px 5px 0 0;    /*To affect only top corners*/
   color: #222222;
   position: relative;
   z-index: 5;
   color: black !important;             /*To overwrite jquery-ui.css*/
   text-decoration: none !important;     /*To overwrite jquery-ui.css*/
}    
a:focus{                                /*To handle that annoing border(chrome) when item is in focus*/
 outline: none;   
}

JavaScript

$("#main").tabs();