JSFiddle - React, Tailwind, and code Playground

HTML

<li class="active"><a href="#nd_login_form" >login</a></li>
<form action="" method="post" class="nd_form" id="nd_login_form" style="z-index:100;background:gainsboro;position:absolute;display:none;"><div class="nd_form_inner"> 

    <input type="text" class="text" name="log" id="nd_username" placeholder="" /><br/> 
  <input type="password" class="text" name="pwd" id="nd_password" placeholder="" />

<input type="submit" class="button" value="ok" /> 
        <input name="nd_login" type="hidden" value="true"  /> 
                <input name="redirect_to" type="hidden" id="redirect_to" value="<?php echo nd_login_current_url(); ?>"  />

JavaScript

$(".active").click(function () { 
         $("#nd_login_form").slideToggle("fast"); 
      });