/*.posts_frm_vertical .posts_frm { width: 49%; }
.posts_frm_vertical .posts_frm:nth-child(3n) { margin-right: 2%; }
.posts_frm_vertical .posts_frm:nth-child(2n) { margin-right: 0 }
@media screen and (max-width: 991px){
  .posts_frm_vertical .posts_frm { width: 100%; }
  .posts_frm_vertical .posts_frm:nth-child(3n) { margin-right: 0; }
}
*/