JSFiddle - React, Tailwind, and code Playground

HTML

<br/>
<div class="gridContainer clearfix">
    <div id="top" class="fluid"></div>
    <div id="menu" class="fluid">Forside - Produkter - Priser - Om - Kontakt</div>
    <div id="midt" class="fluid">Hvad sĂĄ der?</div>
    <div id="bund" class="fluid"></div>
</div>

CSS

body {
    background: url(http://www.sverkel.dk/billeder/bg.jpg) center center;
}

.gridContainer {
    width:90%;
    max-width:1200px;
    border-radius:10px;
    box-shadow:0px 0px 16px rgba(0,0,0,0.8);
    margin:auto auto;
    text-align:center;
    background:#e5e5e5;    
}

/* gradients from http://www.colorzilla.com/gradient-editor/ */
.gridContainer #top {
    background: #b4b4b4; /* Old browsers */
    background: -moz-linear-gradient(top, #b4b4b4 0%, #e5e5e5 100%); /* FF3.6+ */
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#b4b4b4), color-stop(100%,#e5e5e5)); /* Chrome,Safari4+ */
    background: -webkit-linear-gradient(top, #b4b4b4 0%,#e5e5e5 100%); /* Chrome10+,Safari5.1+ */
    background: -o-linear-gradient(top, #b4b4b4 0%,#e5e5e5 100%); /* Opera 11.10+ */
    background: -ms-linear-gradient(top, #b4b4b4 0%,#e5e5e5 100%); /* IE10+ */
    background: linear-gradient(to bottom, #b4b4b4 0%,#e5e5e5 100%); /* W3C */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#b4b4b4', endColorstr='#e5e5e5',GradientType=0 );
    width:100%;
    height:125px;
    border-radius:10px 10px 0px 0px;
}

.gridContainer #bund {
    background: #b4b4b4; /* Old browsers */
    background: -moz-linear-gradient(top, #e5e5e5 0%, #b4b4b4 100%); /* FF3.6+ */
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#e5e5e5), color-stop(100%,#b4b4b4)); /* Chrome,Safari4+ */
    background: -webkit-linear-gradient(top, #e5e5e5 0%,#b4b4b4 100%); /* Chrome10+,Safari5.1+ */
    background: -o-linear-gradient(top, #e5e5e5 0%,#b4b4b4 100%); /* Opera 11.10+ */
    background: -ms-linear-gradient(top, #e5e5e5 0%,#b4b4b4 100%); /* IE10+ */
    background: linear-gradient(to bottom, #e5e5e5 0%,#b4b4b4 100%); /* W3C */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#e5e5e5', endColorstr='#b4b4b4',GradientType=0 );
    width:100%;
    height:125px;
    border-radius:0px 0px 10px...