article {
  border-style: solid;
}

article p {
  white-space: pre-line;
}

section {
  padding-left: 10px;
}

pre {
  border-style: solid;
  border-width: thin;
  padding: 5px;
}

.gt {
  color: green;
}

.rt {
  color: red;
}

.vemb {
  overflow: hidden;
  position: relative;
  height: 0;
  padding-bottom: 66%;
}

.vembc {
  left: 0;
  top: 0;
  height: 100%;
  width: 100%;
  position: absolute;
}