.dot_green {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: #28a745; /* verde */
  display: inline-block;
  vertical-align: middle;
}
.dot_red {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: red; /* verde */
  display: inline-block;
  vertical-align: middle;
}