#s-m-t-tooltip {
  background: #DCA3FF;
  color: #000;
  font-size: 13px;
  padding: 7px 10px;
  border: 2px solid #000;
  border-radius: 8px; /* smoother corners */
  pointer-events: none;
  z-index: 9999;
  box-shadow: 3px 3px 6px rgba(0,0,0,0.25);
}