body { font-family: Arial, sans-serif; padding: 20px; }
#threads { margin-bottom: 20px; max-height: 400px; overflow-y: auto; border: 1px solid #ccc; padding: 10px; }
.incoming { background: #e1f5fe; margin: 5px; padding: 5px; border-radius: 5px; }
.outgoing { background: #c8e6c9; margin: 5px; padding: 5px; border-radius: 5px; }