fix: update build script to disable minification in Parcel

- modify the build script in package.json to include the --no-minify flag for Parcel
- this change aims to prevent issues related to CSS minification while maintaining compatibility with the existing PostCSS setup

Author: nweii

package.json

@@ -5,7 +5,7 @@
   "scripts": {
     "start": "parcel src/index.html",
     "dev": "parcel src/index.html",
-    "build": "parcel build src/index.html",
+    "build": "parcel build src/index.html --no-minify",
     "clean": "rm -rf dist .parcel-cache"
   },
   "devDependencies": {