请问：开启ssr渲染后，如何保证css是在body前面，而不是客户端加载css的方式

[xiaoshuimao]

umi@3.5.24

const base = {
  hash: false,
  ssr: {
    //  devServerRender: false,
  },
  antd: {},
  dva: {
    hmr: true,
    immer: { enableES5: true }//如需兼容 IE11，需配置
  },
  dynamicImport: {
        // loading: '@ant-design/pro-layout/es/PageLoading',
      },

  // bug  https://github.com/ant-design/ant-design/issues/33007
  lessLoader: {
    // golbalVars: {
    //   'root-entry-name': 'default'
    // }
    modifyVars: {
      'root-entry-name': 'default'
    }
  },

  plugins: plugins,
  // esbuild is father build tools
  // https://umijs.org/plugins/plugin-esbuild
  // esbuild: {},
  title: false,
  ignoreMomentLocale: true,
  proxy: proxy[UMI_ENV || 'dev'],
  manifest: {
    basePath: '/',
  },
  // Fast Refresh 热更新
  fastRefresh: {},
  define: {
    UMI_ENV, // 注册到全局
    PLATFORM,
  },
  nodeModulesTransform: { type: 'none' },
  // nodeModulesTransform: { type: 'all',  },
  mfsu: false,
  webpack5: {},
}