duration:250ms;animation-name:fb_bounce_in_v1}.fb_customer_chat_bounce_out_v1{animation-duration:250ms;animation-name:fb_bounce_out_v1}.fb_customer_chat_bounce_in_v2{animation-duration:300ms;animation-name:fb_bounce_in_v2;transition-timing-function:ease-in}.fb_customer_chat_bounce_out_v2{animation-duration:300ms;animation-name:fb_bounce_out_v2;transition-timing-function:ease-in}.fb_customer_chat_bounce_in_v2_mobile_chat_started{animation-duration:300ms;animation-name:fb_bounce_in_v2_mobile_chat_started;tran