.flash {
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  margin-bottom: 1rem;
}

.flash-success {
  background: #d4edda;
  color: #155724;
}

.flash-error {
  background: #f8d7da;
  color: #721c24;
}

article.warning {
  background: #fff3cd;
  color: #664d03;
  border-radius: 0.5rem;
}

nav a.active {
  text-decoration: underline;
}

#preview-content {
  width: 100%;
}