span.alert {
  background-color: #c00000;
  color: white;
  padding: 2px;
}

span.approach {
  background-color: #004000;
  color: white;
  padding: 2px;
}

span.step {
  background-color: navy;
  color: white;
  padding: 2px;
}

span.desc {
  font-weight: bold;
}