                    <div class="col-xs-6 col-sm-3">.col-xs-6 .col-sm-3</div>

                            <!-- Add the extra clearfix for only the required viewport -->
                            <div class="clearfix visible-xs"></div>

                            <div class="col-xs-6 col-sm-3">.col-xs-6 .col-sm-3</div>
                            <div class="col-xs-6 col-sm-3">.col-xs-6 .col-sm-3</div>
                        </div>
                    </div>
                </div>
            </div>

   