.code {
  font-family: Sans-Serif;
  border-width: 1px;
  border-style: solid;
  border-color: gray;
  background: white;
  color:black;
  padding: 5px;
}
.code .keyword {
  font-weight:bold;
  color:darkblue;
}
.code div {
  padding-left: 1em;
}
.comment {
  color:green;
}