<br> <img src="" alt="دکتر" class="center-block img-responsive"> <div class="visible-lg"> </div> <br> <img src="" alt="دکتر" class="center-block img-responsive"><br> <img src="" alt="دکتر" class="center-block img-responsive"><br> <img src="" alt="وریر" class="center-block img-responsive">