.CAUTION {
  background-color: lightgrey;
  border: 2px solid red;
  padding: 10px;
  margin: 10px;
  color: red;
}
table  {
  border-collapse:collapse;
  border-spacing:0;
}
th, td {
  padding: 10px;
  border-style: solid;
  border-width: 1px;
  border-color: black;
  text-align: left;
  vertical-align: middle;
}

.md-content__inner.md-typeset h1 {
    font-size: 1.6rem;
}
.md-content__inner.md-typeset h2 {
    font-size: 1.4rem;
    background-color: #00ced1;
}
.md-content__inner.md-typeset h3 {
    font-size: 1.2rem;
    background-color: #7fffd4;
}
.md-content__inner.md-typeset h4 {
    font-size: 1rem;
    background-color: #9e9e9e;
}