.cls-messagebox {
  max-width: 600px;
  z-index: 10;
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translate(-50%, 0);
  border: 1px solid gray;
  border-radius: 3px;
  background-color: white;
}

.cls-messagebox.empty {
  display: none;
}

.cls-messagebox > div {
  padding: 10px;
}

.cls-messagebox > div:not(:last-child) {
  border-bottom: 1px solid gray;
}