.com_arc .item { display: block; margin-bottom: 40px; padding-bottom: 36px; border-bottom: 2px dotted #C51011; }
.com_arc .item:last-of-type { margin: 0; padding: 0; border: 0; }
.com_arc .item.has-left-block { min-height: 136px; }

.com_arc .item { margin-bottom: 40px; }
.com_arc .left_block { float: left; }
.com_arc .right_block { margin-left: 240px; }
.com_arc .intro { margin: 10px 0; }


@media screen and (max-width: 700px) {
  .com_arc .left_block { display: none; }
  .com_arc .right_block { margin: 0; }
  .com_arc .title { text-align: center; }
}