.FOO {
  font-weight: bold;
  color: red;
}

.blackbox {
  padding: 1em;
  background: black;
  color: white;
  border: 2px solid orange;
  border-radius: 10px;
  text-align: center;
}

.rmdcaution, .rmdimportant, .rmdnote, .rmdtip, .rmdwarning {
  padding: 1em 1em 1em 4em;
  margin-bottom: 10px;
  background: #f5f5f5 5px center/3em no-repeat;
}

.rmdimportant {
  background-image: url("../images/important.png");
}
.rmdcaution {
  background-image: url("../images/caution.png");
}