#offerBanner {
  position: fixed;
  bottom: 16px;
  left: 16px;
  max-width: 150px;
  background: #c62828;
  color: #fff;
  padding: 10px 12px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 13px;
  box-shadow: 0 0 12px rgba(0,0,0,.5);
  z-index: 9999;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
}

#offerBanner .close {
  margin-left: auto;
  background: none;
  border: none;
  color: #fff;
  font-size: 16px;
  font-weight: 900;
  cursor: pointer;
  padding: 0;
  line-height: 1;
}
@keyframes pulse {
  0% { transform: translateX(-50%) scale(1); }
  50% { transform: translateX(-50%) scale(1.04); }
  100% { transform: translateX(-50%) scale(1); }
}