.w_b_talk{border-radius:10px;min-height:45px;padding:10px}.w_b_talk:before{border:6px solid #0000;top:18px}.w_b_talk:after{border:5px solid #0000;top:19px}.w_b_talk_L{color:#222;background:#fff;border:1px solid #ddd;margin:0 auto 0 10px}.w_b_talk_L:before{border-top-color:#ddd;border-right-color:#ddd;left:-12px}.w_b_talk_L:after{border-top-color:#fff;border-right-color:#fff;left:-10px}.w_b_talk_R{color:#222;background:#fff;border:1px solid #ddd;margin:0 10px 0 auto}.w_b_talk_R:before{border-top-color:#ddd;border-left-color:#ddd;right:-12px}.w_b_talk_R:after{border-top-color:#fff;border-left-color:#fff;right:-10px}