JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>

<html lang="en">
<head>
    <meta charset="utf-8" />
    <link rel="stylesheet" type="text/css" href="style.css" />
    <title>Page title</title>
</head>
<body>
<div id="menu"> 
    <ul id="item1"> 
        <li class="top">Branding</li> 
        <li class="item"><a href="#">Brief</a></li> 
        <li class="item"><a href="#">Visuals</a></li> 
    </ul>
    <ul id="item33">
        <li>oke</li>
    </ul>
    <ul id="item2"> 
        <li class="top">Website</li> 
        <li class="item"><a href="#">Specification</a></li> 
        <li class="item"><a href="#">Sitemap</a></li> 
        <li class="item"><a href="#">Wireframe</a></li> 
    </ul>
    <ul id="item3"> 
        <li class="top">Tools</li> 
        <li class="item"><a href="#">Notes</a></li> 
    </ul>
</div> 
</body>
</html>

CSS

@import url(reset.css);

body {
    background-color: #333;
    font: 13px Helvetica,Arial,Geneva,sans-serif;
}

li {
    display: inline;
    list-style: none;
    color: #333;
}

a {
    text-decoration: none;
    color: #333;
}

a:hover {
    color: #333;
    font-weight: bold;
}

#menu {
    position:absolute;
    top: 20px;
    left: 30px;
} /* This controls the position of the menu itself */

#menu ul {
    float: left;
    list-style: none outside none;
    margin-right: 10px;
    width: 148px;
    height: 25px;
    line-height: 25px;
    text-indent: 7px;
    background-image: ;
    border: 1px solid #cbc5cd;
    -moz-border-radius: 4px;
    border-radius: 4px;
    background: #dcdcdc; /* for non-css3 browsers */
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#dcdcdc', endColorstr='#b3b3b3'); /* for IE */
    background: -webkit-gradient(linear, left top, left bottom, from(#dcdcdc), to(#b3b3b3)); /* for webkit browsers */
    background: -moz-linear-gradient(top,  #dcdcdc,  #b3b3b3);
} /* This controls the visible items styling */

#menu ul:hover {
    font-weight: bold;
    border: 1px solid #a094a3;
    -moz-border-radius: 4px;
    border-radius: 4px;
    background: #b5acb7; /* for non-css3 browsers */
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#a094a3', endColorstr='#dcdcdc'); /* for IE */
    background: -webkit-gradient(linear, left top, left bottom, from(#a094a3), to(#dcdcdc)); /* for webkit browsers */
    background: -moz-linear-gradient(top,  #a094a3,  #dcdcdc);
} /* This controls the visible items rollover styling */

#menu ul .item {
    display:none;
}

#menu ul:hover .item {
    position: relative;
    left: -1px;
    background: #dcdcdc;
    border-bottom: 1px solid #cbc5cd;
    display: block;
    height: 25px;
    width: 150px;
    font-weight: normal;
} /* This controls the dropdown styling */

#menu ul:hover .item:hover {
    background: #cbc5cd} /* This controls the dropdown rollover...