In react project scss file display empty code space - reactjs

Question

I am new on React. I have installed jqwidgets and node-sass packages.
I run: npm install --save node-sass
In JS component file:
import './style.scss';
in style.scss:
.welcome{
background-color: firebrick;
}
Then I open developer tools on browser style.scss I see:
module.exports = __webpack_public_path__ + "static/media/style.7388d000.scss";
//////////////////
// WEBPACK FOOTER
// ./src/components/Welcome/style.scss
// module id = ./src/components/Welcome/style.scss
// module chunks = 0
Why sass style code is not displaying?
packages.json:
{
"_from": "https://github.com/jqwidgets/my-app2/tarball/master",
"_id": "my-app2#1.0.0",
"_inBundle": false,
"_integrity": "sha512-TzCrV6rvvYS5En18r6qrM2T7Rz24DQomJCLmQ2j/V08534YPijH5CjTAKJcDI8vNHM+HgyNS3YFxDVd0mHWSqg==",
"_location": "/my-app2/my-app2",
"_phantomChildren": {},
"_requested": {
"type": "remote",
"raw": "my-app2#https://github.com/jqwidgets/my-app2/tarball/master",
"name": "my-app2",
"escapedName": "my-app2",
"rawSpec": "https://github.com/jqwidgets/my-app2/tarball/master",
"saveSpec": "https://github.com/jqwidgets/my-app2/tarball/master",
"fetchSpec": "https://github.com/jqwidgets/my-app2/tarball/master"
},
"_requiredBy": [],
"_resolved": "https://github.com/jqwidgets/my-app2/tarball/master",
"_shasum": "7d2a1b35e0af075c74da15c045aaddabd7a70e35",
"_spec": "my-app2#https://github.com/jqwidgets/my-app2/tarball/master",
"_where": "C:\\Users\\Evoiu\\AppData\\Roaming\\npm\\node_modules\\my-app2",
"bundleDependencies": false,
"dependencies": {
"axios": "^0.18.0",
"react": "16.4.1",
"react-dom": "16.4.1",
"react-router": "^4.3.1",
"react-router-dom": "^4.3.1",
"react-router-redux": "^4.0.8",
"react-scripts": "1.1.4"
},
"deprecated": false,
"description": "Please refer to its documentation: - [Getting Started](https://github.com/jqwidgets/my-app2/blob/master/README.md#getting-started) - [jQWidgets React Documentation](http://www.jqwidgets.com/reactjs-components-documentation/)",
"name": "my-app2",
"private": true,
"scripts": {
"build": "react-scripts build",
"eject": "react-scripts eject",
"start": "react-scripts start",
"test": "react-scripts test --env=jsdom"
},
"version": "1.0.0",
"devDependencies": {
"node-sass": "^4.11.0",
"sass-loader": "^7.1.0"
}
}
I spend so much hour, Idont know where is problem... :(
If I create new project with only node-sass, then its working. Deam it why its not working with jqwidgets.

Answer 1

https://www.jqwidgets.com/reactjs-components-documentation/documentation/create-jqwidgets-react-app/index.htm
have you install jqwidgets-react-app with this?
I haven't tested it myself.