<br> <div class="row"> <div class="col-lg-6 col-md-6 col-sm-6 col-xs-6 column"> <div><img src="" alt="مدرسه زمستانه" class="center-block img-responsive"> </div> </div> <div class="col-lg-6 col-md-6 col-sm-6 col-xs-6 column"> <div><img src="" alt="مدرسه زمستانه" class="center-block img-responsive"> </div> </div> </div> <div class="row"> <div class="col-lg-12 col-md-12 col-sm-12 col-xs-12 column"> <div><img src="" alt="مدرسه زمستانه" class="center-block img-responsive"> </div> </div> </div> <br>