body { max-width: none; margin: 0; padding: 0; height: 100vh; display: flex; flex-direction: column; }
main { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.chart { display: block; flex: 1; height: auto; min-height: 0; border: 0; border-radius: 0; margin: 0; padding: 0; cursor: pointer; }
#unanswered, #library { margin: 0; padding: 0.25rem 0.75rem; font-size: 0.85rem; }