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.교장말풍선::after{content:"";position:absolute;left:calc(50% - 7px);bottom:-9px;width:12px;height:12px;transform:rotate(45deg);background:#fffaf0;border-right:2px solid #efb562;border-bottom:2px solid #efb562}
.교장말풍선[hidden],body:not([data-playing="true"]) .교장말풍선{display:none}
