.w_b_talk_oc{padding:10px;margin:0 auto 8px;min-height:45px;border-radius:10px}.w_b_talk_oc:before,.w_b_talk_oc:after{width:0;height:0;border:5px solid transparent}.w_b_talk_oc:before{bottom:-11px}.w_b_talk_oc:after{bottom:-9px}.w_b_talk_oc_L{border:1px solid #ddd;background:#fff}.w_b_talk_oc_L:before{border-top-color:#ddd;left:50%;transform:translateX(-50%)}.w_b_talk_oc_L:after{border-top-color:#fff;left:50%;transform:translateX(-50%)}.w_b_talk_oc_R{border:1px solid #ddd;background:#fff}.w_b_talk_oc_R:before{border-top-color:#ddd;right:50%;transform:translateX(50%)}.w_b_talk_oc_R:after{border-top-color:#fff;right:50%;transform:translateX(50%)}