.mapper-info {
  position: relative;
  background: #454545;
  border-radius: 0.4em;
  color: white !important;
  padding: 20px;
}

.mapper-info:after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 0;
  border: 0.656em solid transparent;
  border-top-color: #454545;
  border-bottom: 0;
  margin-left: -0.656em;
  margin-bottom: -0.656em;
}