.im-header{border-bottom:1px solid #eee}.im-content .im-message{margin-top:30px}.im-content .im-message:last-child{margin-top:0}.im-content .im-message:first-child{margin-bottom:10px}.im-content .message-content{width:auto;max-width:500px;word-wrap:break-word}.im-operator{border-top:1px solid #eee}.im-operator .im-message-input{resize:none}.im-list{border-right:1px solid #eee}.user-list{max-height:610px}.im-container{height:690px}