nav {
  background-color: #333;
  padding: 10px;
}

nav a {
  color: white;
  text-decoration: none;
  margin-right: 15px;
  font-size: 16px;
}

nav a:hover {
  text-decoration: underline;
}

.course {
  display: flex;
  gap: 20px;
  margin-bottom: 30px;
}

.parsed {
  width: 40%;
  background: #f4f4f4;
  padding: 10px;
}

.original {
  width: 60%;
  background: #fff;
  border: 1px solid #ccc;
  padding: 10px;
}

pre {
  white-space: pre-wrap;
  font-size: 13px;
}