.advertisement {
  position: fixed;
  right: 100px;
  bottom: 100px;
  width: 230px;
  height: 300px;
  background: #E6E6E6;
  box-shadow: 0px 6px 12px 0px rgba(0, 0, 0, 0.3);
  overflow: hidden;
  border-radius: 18px;
}

.advertisement .img1 {
  position: fixed;
  right: 64px;
  bottom: 392px;
  width: 30px;
  height: 30px;
}

.advertisement a .img2 {
  width: 100%;
  height: 100%;
}