JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
<div class="user-options">
        <ul class="settings">
            <li><a href="home.html">JOHN DOE</a></li>
            <li><a href="user-customization.html">My Playground</a></li>
            <li><a href="myrules.html">Settings</a></li>
            <li><a href="index.html">Logout</a></li>
        </ul>
    </div>

CSS

.user-options {
    position: relative;
	border: 10px solid #cccccc;
    top:100px;
}

.user-options:after, .arrow_box:before {
	bottom: 100%;
	left: 20%;
	border: solid transparent;
	content: " ";
	position: absolute;	
}

.user-options:after {
	border-bottom-color: #cccccc;
	border-width: 30px;
}
.user-options:before {
	border-bottom-color: #cccccc;
	border-width: 30px;
}