#zb-chatbot { position: fixed; right: 18px; bottom: 18px; z-index: 2000; }
#zb-chat-toggle { width: 56px; height: 56px; border-radius: 50%; }
#zb-chat-window { width: 340px; display: none; }
@media (max-width: 480px) { #zb-chat-window { width: 95vw; } }