.f1-container { font-family: Arial; }
.f1-table { width:100%; border-collapse:collapse; }
.f1-table td { border:1px solid #ccc; padding:6px; }
.f1-collapse { max-height:0; overflow:hidden; transition:0.3s; }
.f1-collapse:not(.collapsed){ max-height:1000px; }
.f1-toggle-btn { margin-top:10px; }