diff --git a/05-merge-styles/index.js b/05-merge-styles/index.js
index e69de29bb..6e0739e7f 100644
--- a/05-merge-styles/index.js
+++ b/05-merge-styles/index.js
@@ -0,0 +1,35 @@
+const fs = require('fs');
+const path = require('path');
+
+const distDir = path.join(__dirname, 'project-dist');
+if (!fs.existsSync(distDir)) {
+  fs.mkdirSync(distDir);
+}
+
+const outputFilePath = path.join(distDir, 'bundle.css');
+const outputStream = fs.createWriteStream(outputFilePath, { flags: 'w' });
+
+const stylesDir = path.join(__dirname, 'styles');
+fs.readdir(stylesDir, (err, files) => {
+  if (err) {
+    console.error(`Error reading styles directory: ${err}`);
+    return;
+  }
+  files.forEach((filename) => {
+    const filePath = path.join(stylesDir, filename);
+
+    if (path.extname(filePath) !== '.css' || !fs.statSync(filePath).isFile()) {
+      return;
+    }
+
+    const fileStream = fs.createReadStream(filePath);
+    fileStream.on('error', (err) => {
+      console.error(`Error reading file ${filePath}: ${err}`);
+    });
+    fileStream.pipe(outputStream, { end: false });
+  });
+  outputStream.on('finish', () => {
+    console.log(`Bundle file has been written to ${outputFilePath}`);
+  });
+  outputStream.end();
+});