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frontend/webpack.config.js

@@ -18,6 +18,10 @@ module.exports = {
         test: /\.scss$/,
         use: ['style-loader', 'css-loader', 'sass-loader'],
       },
+      {
+        test: /\.css$/,
+        use: ['style-loader', 'css-loader'],
+      },
     ],
   },
   plugins: [