<div class="container">
  <div class="row">
    <div class="col-sm-6 col-md-4 col-md-offset-2">
      <div class="widget widget-flickr">
        <p class="widget-title h5">Tiny flickr gallery</p>
        <div class="flickr-gallery gallery-tiny-icons flickr-no-border" data-tags="red cars"></div>
      </div>    </div>
    <div class="col-sm-6 col-md-4">
      <div class="widget widget-flickr">
        <p class="widget-title h5">Flickr gallery</p>
        <div class="flickr-gallery gallery-small-icons flickr-no-border" data-tags="red cars"></div>
      </div>    </div>
  </div>
</div>