JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
<div id="slide-panel" class="visible">
    <a href="#" class="btn btn-warning" id="opener"><i class="glyphicon glyphicon-align-justify"></i></a>
    <div id="content">
        Panel Content        
    </div>
</div>

CSS

#slide-panel {
    width:300px;
    height:300px;
    position: relative;
    left: 260px;
    float:right;
    
}
#opener {
    margin:-10px -50px 0px 0px;
    padding-top:15px;
    border-radius:0;
}
#content {
    float: right;
    margin-left: 50px;
    height: 300px;
    width: 250px;
    background:#eee;
}

JavaScript

$('#opener').on('click', function() {		
		var panel = $('#slide-panel');
		if (panel.hasClass("visible")) {
			panel.removeClass('visible').animate({'left':'0px'});
		} else {
			panel.addClass('visible').animate({'left':'260px'});
		}	
		return false;	
	});