@media only screen and (max-width: 992px) {
  .blog-masonry article,
  .blog-masonry article img {
    width: 100%;
  }
}
@media only screen and (max-width: 768px) {
  .blog-masonry article img {
    width: 100%;
  }
  .blog-masonry {
    margin: 0;
  }
  .blog-masonry article {
    margin-left: 0;
  }
}