<aside class="right-side">
    <section class="content-header">
        <h1>Bad Request - 400</h1>
    </section>
    
    <section class="content">
        <div class="row">
            <div class="col-xs-12">
                <div class="box box-danger">
                    <div class="box-body">
                        <p>Bad Request: Please check the request url.</p>
                    </div>
                </div>
            </div>
        </div>
    </section>
</aside>