WP_Query Loop

   <?php $loop = new WP_Query(array('post_type' => 'post', 'order' => 'DESC', 'category_name' => 'blog', 'posts_per_page' => 2)); ?>
                <?php while($loop->have_posts()) : $loop -> the_post(); ?>
                  <div class="col-sm-6">
                    <article>
                      <a href="<?php the_permalink(); ?>">
                        <?php if ( has_post_thumbnail() ) {
                         the_post_thumbnail('blog_img', array('class' => 'img-responsive'));
                          } else { ?>
                          <img src="<?php bloginfo('template_directory'); ?>/img/blog1.png" alt="<?php the_title(); ?>" />
                      <?php } ?>
                      </a>
                      <h3><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h3>
                      <div class="post-details">
                        <i class="fa fa-user"></i> <?php the_author(); ?>
                        <i class="fa fa-clock-o"></i> <time><?php the_date(); ?></time>
                      </div> <!-- end of post details -->
                      <div class="blog-summary text-justify">
                        <?php the_excerpt(); ?>
                      </div>
                    </article>
                  </div>
            <?php endwhile; ?>