.bad, .seriousError {
  color: red !important;
}
.error, .seriousError {
  border: 1px red;
  background-color: #fdd;
}
.attention, .seriousError {
  font-size: 3em;
  background-color: #ff0;
}
.seriousError {
  border-width: 3px;
}