JSFiddle - React, Tailwind, and code Playground

HTML

<body>
        <header>
            <div class="content-wrapper">
                <div class="float-left">
                    <p class="site-title"><a href="/">Test</a></p>
                </div>
                <div class="float-right">
                    <section id="login">
                       Hei, <span class="username">Anonymous</span>!
                    </section>
                    <nav>
                        <ul id="menu">
                            <li><a href="/">Home</a></li>
                            <li><a href="/Home/About">About</a></li>
                            <li><a href="/Home/Contact">Contact</a></li>
                        </ul>
                    </nav>
                </div>
            </div>
        </header>
        <div id="body">
            <!---->
            <section class="content-wrapper main-content clear-fix">


<h3>We suggest the following:</h3>
<ol class="round">
    <li class="one">
        <h5>Getting Started</h5>
        ASP.NET MVC gives you a powerful, patterns-based way to build dynamic websites that
        enables a clean separation of concerns and that gives you full control over markup
        for enjoyable, agile development. ASP.NET MVC includes many features that enable
        fast, TDD-friendly development for creating sophisticated applications that use
        the latest web standards.
        <a href="http://go.microsoft.com/fwlink/?LinkId=245151">Learn more…</a>
    </li>

    <li class="two">
        <h5>Add NuGet packages and jump-start your coding</h5>
        NuGet makes it easy to install and update free libraries and tools.
        <a href="http://go.microsoft.com/fwlink/?LinkId=245153">Learn more…</a>
    </li>

    <li class="three">
        <h5>Find Web Hosting</h5>
        You can easily find a web hosting company that offers the right mix of features
        and price for your applications.
        <a href="http://go.microsoft.com/fwlink/?LinkId=245157">Learn more…</a>
   ...

CSS

html {
    background-color: #e2e2e2;
    margin: 0;
    padding: 0;
}

body {
    /*background-color: #7ac0da;*/
    border-top: solid 10px #000;
    color: #333;
    font-size: .85em;
    font-family: "Segoe UI", Verdana, Helvetica, Sans-Serif;
    margin: 0;
    padding: 0;
}

a {
    color: #333;
    outline: none;
    padding-left: 3px;
    padding-right: 3px;
    text-decoration: underline;
}

    a:link, a:visited,
    a:active, a:hover {
        color: #333;
    }

/*header, footer, hgroup,
nav, section {
    display: block;
}*/

mark {
    background-color: #a6dbed;
    padding-left: 5px;
    padding-right: 5px;
}

.float-left {
    float: left;
}

.float-right {
    float: right;
}

.clear-fix:after {
    content: ".";
    clear: both;
    display: block;
    height: 0;
    visibility: hidden;
}

h1, h2, h3,
h4, h5, h6 {
    color: #000;
    margin-bottom: 0;
    padding-bottom: 0;
}

h1 {
    font-size: 2em;
}

h2 {
    font-size: 1.75em;
}

h3 {
    font-size: 1.2em;
}

h4 {
    font-size: 1.1em;
}

h5, h6 {
    font-size: 1em;
}

    h5 a:link, h5 a:visited, h5 a:active {
        padding: 0;
        text-decoration: none;
    }


/* main layout
----------------------------------------------------------*/
.content-wrapper {
    margin: 0 auto;
    max-width: 960px;
}

header .content-wrapper {
    /*margin-top: 20px;*/
    background-color: #7ac0da;
    background-image: -ms-linear-gradient(left, #7ac0da 0%, #a4d4e6 100%);
    background-image: -o-linear-gradient(left, #7ac0da 0%, #a4d4e6 100%);
    background-image: -webkit-gradient(linear, left top, right top, color-stop(0, #7ac0da), color-stop(1, #a4d4e6));
    background-image: -webkit-linear-gradient(left, #7ac0da 0%, #a4d4e6 100%);
    background-image: -moz-linear-gradient(0% 0% 0deg,#7AC0DA, #a4d4e6);
    /*background-image: linear-gradient(left, #7ac0da 0%, #a4d4e6 100%);*/
}

header .content-wrapper:after,
header .content-wrapper:before {
    display: table;
    content: "";
    clear:...