.blog-post-container.blog-post-columns-2 .blog-post-item {
  width: 50%;
  float: left;
}

.blog-post-container.blog-post-columns-2 .blog-post-item:nth-child(2n+1) {
  padding-right: 10px;
}

.blog-post-container.blog-post-columns-2 .blog-post-item:nth-child(2n) {
  padding-left: 10px;
}