.el-header{color:#333;line-height:60px;height:30px}.el-aside{color:#333;border-right:1px solid #eee}.Usermailbox{width:100%;height:calc(100% - 50px)}.Usermailbox .bg-white{height:100%}.Usermailbox .Navigation{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-pack:justify;-ms-flex-pack:justify;justify-content:space-between;-webkit-box-align:center;-ms-flex-align:center;align-items:center;border-bottom:1px solid #dcdcdc}.Usermailbox .Navigation .NavigationBox{height:50px;line-height:50px;padding:0 20px}.Usermailbox .Navigation .goback{display:-webkit-box;display:-ms-flexbox;display:flex;-ms-flex-wrap:nowrap;flex-wrap:nowrap}