.kayser-banner {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
  padding: 25px 35px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
  border-radius: 8px;
  z-index: 10000;
  text-align: center;
  max-width: 90%;
}

.banner-close {
  position: absolute;
  top: 5px;
  right: 5px;
  background: none;
  border: none;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}