.it-chat-login{height:100%}.it-chat-login .content{overflow:auto;overflow-y:scroll;height:100%;text-align:left}.it-chat-login .content .red{color:red}.it-chat-login .content .green{color:green}.it-chat-login .content .card{margin:10px auto 0 auto;width:600px}.it-chat-login .content #qrCode{margin:0 auto;width:150px;height:150px}