.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%;
  }