#OnlineChatPage{height:100%}iframe{width:100%;height:calc(100vh - 200px)}[dir] iframe{border:none}@media (max-width:768px){[dir] #OnlineChatPage{margin:-28px}#OnlineChatPage .card{height:calc(100vh - 150px);top:-53px}iframe{height:calc(100vh - 250px)}}@media (min-width:768px){#OnlineChatPage{width:800px}[dir] #OnlineChatPage{background-color:#fff!important;margin:0 auto}}