.bnr_cnt {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.bnr_cnt>div#online {
  width: 50%;
  margin-top: 10px;
}

.bnr_cnt>div:nth-child(1) {
  margin-right: 10px;
}

.bnr_cnt>div img {
  max-width: 100%;
}