.bigyapan-banner {
  width: 100%;
  position: relative;
  padding: 10px 0;
  display: flex;
  flex-direction: column;
  grid-gap: 10px;
}
.bigyapan-banner::before {
  content: "Advertisement";
  position: absolute;
  top: 0px;
  left: 50%;
  transform: translateX(-50%);
  color: #777;
  font-size: 14px;
  font-weight: 500;
}
.bigyapan-banner .banner {
  width: 100%;
}