.el-submenu{background:#344563}.el-submenu .el-submenu{background:#2a374f}.el-submenu .el-submenu .el-submenu__title:hover{background:#0e1b25;transition:background 1s linear}.el-submenu .el-submenu .el-menu{background:#0e1b25}.el-submenu .el-submenu .el-menu-item.is-active{background:#000}.el-submenu .el-menu-item.is-active,.el-submenu .el-menu-item:hover{background:#0e1b25}.el-submenu .el-submenu__title:hover{background:#2a374f;transition:background 1s linear}.el-submenu .el-menu{background:#2a374f}.admin_left{display:flex;flex-direction:column;height:100%}.admin_left .top_logo{height:90px;color:#e3f2f9;background:#2d3c56;display:flex;flex-direction:row;justify-content:center;align-items:center}.admin_left .top_logo span{font:18px/55px 黑体;color:#e3f2f9;margin-left:10px}.admin_left .left_nav{flex:1;background:#344563}