JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">

<html>
    <head> 
        <meta http-equiv="content-type" content="text/html; charset=UTF-8">
        
        <title></title> 
        <script type="text/javascript" src="jquery.min.js"></script>
        <script type="text/javascript" src="jquery-ui.min.js"></script>
        <script type="text/javascript" src="script.js"></script>
        
        <link type="text/css" href="style.css" rel="stylesheet" />
    </head> 
    <body>
        <div class="notification">
        
            <div class="inner_notification">
                notification
            </div>
            
        </div>
        
        <div class="header">
        
            <div class="inner_header">
                header
            </div>
            
        </div>
        
        <div class="top_menu">
        
            <div class="inner_top_menu">
                <div class="menu_button">menu</div>
                <div class="dropdown_left">
                    <div>icon Default 2</div>
                    <div>icon Reports 2</div>
                    <div>icon Other 2</div>
                </div>
                <div class="configure_button">(c)</div>
                <div class="dropdown_left dropdown_right">
                    <div>icon Default 2</div>
                    <div>icon Reports 2</div>
                    <div>icon Other 2</div>
                </div>
                
                <div class="clearfix"></div>
                
            </div>

        </div>

        <div class="title">
        
            <div class="inner_title">
                title
            </div>
            
        </div>
        
        <div class="content">

            <div class="inner_content">
                <div class="column">
                
                    <div class="widget">
                        <div class="widget_header">
                            <div...

CSS

/* http://meyerweb.com/eric/tools/css/reset/ 
   v2.0 | 20110126
   License: none (public domain)
*/

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
    font-family:arial;
    font-size:12px;
}
/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
    display: block;
}
body {
    line-height: 1;
}
ol, ul {
    list-style: none;
}
blockquote, q {
    quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
    content: '';
    content: none;
}
table {
    border-collapse: collapse;
    border-spacing: 0;
}

/**/

body
{
    background:#F5F5F5;
}

.notification
{
    background:#FFFFFF;
}

.inner_notification
{
    width:983px; /*1003 max width without horizontal scroll for 1024x768 screens*/
    margin:auto;
    padding:10px;
    background:#EEEEEE;
}

.header
{
    background:#EEEEEE;
}

.inner_header
{
    width:983px; /*1003 max width without horizontal scroll for 1024x768 screens*/
    margin:auto;
    padding:10px;
    background:#DDDDDD;
}

.top_menu
{
    background:#DDDDDD;
}

.inner_top_menu
{
    width:1003px; /*1003 max width without horizontal scroll for 1024x768 screens*/
    margin:auto;
    position: relative;
    background:#CCCCCC;
}

.menu_button {
    float:left;
    padding:10px;
    cursor:pointer;
}

.configure_button {
    float:right;
    padding:10px;
   ...