:root {
  --cyto-green: #087f73;
  --cyto-green-dark: #123c35;
  --cyto-amber: #e6a04b;
}

.bd-header {
  background-color: var(--cyto-green-dark) !important;
  border-bottom: 3px solid var(--cyto-green);
}

a,
.toc-entry a.nav-link:hover,
.toc-entry a.nav-link.active {
  color: var(--cyto-green);
}

.btn-primary {
  background-color: var(--cyto-green);
  border-color: var(--cyto-green);
}

div.cell_output pre {
  border-left: 3px solid var(--cyto-amber);
}