JSFiddle - React, Tailwind, and code Playground

HTML

<ul class="nav">
    <li>
        <a href="#">
            <strong>MP3s &amp; Cloud Player</strong> 18 million songs, play anywhere
        </a>
         <ul>
            <li>
                <a href="#">
                    <strong>Your Cloud Drive</strong> Anythign digital, securely stored, available anywhere
                </a>
            </li>
            <li>
                <a href="#">
                    <strong>Learn more about cloud</strong>                </a>
            </li>
        </ul>
        <span class="cover"></span>
    </li>
    <li>
        <a href="#">
            <strong>MP3s &amp; Cloud Player</strong> 18 million songs, play anywhere
        </a>
        <ul>
            <li>
                <a href="#">
                    <strong>Your Cloud Drive</strong> Anythign digital, securely stored, available anywhere
                </a>
            </li>
            <li>
                <a href="#">
                    <strong>Learn more about cloud</strong>                </a>
            </li>
        </ul>
        <span class="cover"></span>
    </li>
    <li>
        <a href="#">
            <strong>Kindle</strong>
        </a>
    </li>
</ul>

CSS

ul.nav{
    font-size: 10px;
    font-family: Verdana, Helvetica;
    width: 200px;
    background: #edf7ff;      
}

ul.nav li{
    padding: 5px 4px;   
    border: 1px solid #85abc9;
    margin-bottom: -1px;
    position: relative;
    background: url(http://www.qualitymetric.com/Portals/0/images/orange_arrow.png) no-repeat 185px center;
}

ul.nav > li:hover{
    background: #fff;
    border: 1px solid #999;
    z-index:1;
    box-shadow: 0px 1px 0px #999;
    -moz-box-shadow: 0px 1px 0px #999;
}

ul.nav > li:hover > span{
    width: 5px;
    height: 100%;
    background: #fff;
    position: absolute;
    top: 0px;
    bottom: 0px;
    right: 15px;
    z-index: 10;
}

ul.nav li a{
    color: #666;
    text-decoration: none;
}

ul.nav li a strong{
    font-size: 11px;
    color: #333;
    font-weight: bold;
    display: block;
}

/* dropdown */

ul.nav li ul{
    width: 200px;
    padding-left: 12px;
    background: #fff;
    border: 1px solid #999;
    position: absolute;
    border-radius: 4px;
    -moz-border-radius: 4px;
    box-shadow: 1px 1px 0px #999;
    -moz-box-shadow: 1px 1px 0px #999;
    top: -1px;
    left: 180px;
    z-index: 9;
    display: none;
}

ul.nav li:hover > ul{
    display: block;           
}

ul.nav li ul li{
    border: none;
    padding-left: 12px;
    background: url(http://www.qualitymetric.com/Portals/0/images/orange_arrow.png) no-repeat 0px 6px;
}

ul.nav li ul li a strong{
    font-weight: normal;
    color: #034995;
}