#chat_app{height:100%;overflow:hidden;font-size:16px;line-height:24px;font-weight:400;letter-spacing:-.4px;position:relative;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-text-size-adjust:100%}#manager_app *,#chat_app *,#chat_banner *,#expert_banner *{font-family:Noto Sans KR,Inter,Avenir,Helvetica,Arial,sans-serif;box-sizing:border-box}.App{height:100%}.channel_body{display:flex;flex-direction:column;background-color:#333;height:100%;width:100%}#manager_app{display:flex;width:100%;height:100%}#manager_app .chat_manager_head{display:flex;flex-direction:column;row-gap:15px;padding:20px 10px;background-color:#222}#manager_app .chat_manager_head button{width:48px;height:48px;background-color:transparent;border:none}#manager_app .chat_manager_head a{width:48px;height:48px;display:flex;align-items:center;justify-content:center}#manager_app .channel_body{position:relative;height:100vh}#manager_app #chat_message_input{position:absolute}