server/www/screen/hall.css

.listSelector {
  min-height: 4em;
  border: 1px solid #ccc;
}

.listSelector .message {
  display: block;
  text-align: center;
  margin: 1em;
  color: #555;
}

.listSelector .message:empty {
  display: none;
}

.listSelector ul {
  list-style: none;
  margin: 0;
  padding-left: 0;
}