docs: expand CSS Core answers

Author: github-actions[bot]

.github/workflows/build.yml

@@ -5,7 +5,7 @@ on:
   workflow_dispatch:
 
 permissions:
-  contents: write
+  contents: read
 
 concurrency:
   group: build-${{ github.ref }}
@@ -18,9 +18,6 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-        with:
-          ref: ${{ github.head_ref }}
-          fetch-depth: 0
 
       - name: Setup Node.js
         uses: actions/setup-node@v4
@@ -31,27 +28,6 @@ jobs:
       - name: Install dependencies
         run: npm ci
 
-      - name: Apply CSS Core expansion
-        run: |
-          python3 <<'PY'
-          from pathlib import Path
-
-          path = Path('src/pages/css/index.md')
-          text = path.read_text()
-          replacement = Path('.tmp-css-core-section.md').read_text().rstrip()
-          start = text.index('### CSS Core')
-          end = text.index('### CSS Layout')
-          path.write_text(text[:start] + replacement + '\n\n' + text[end:])
-          PY
-          npx prettier src/pages/css/index.md --write
-          rm .tmp-css-core-section.md
-          git checkout origin/main -- .github/workflows/build.yml
-          git config user.name "github-actions[bot]"
-          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
-          git add src/pages/css/index.md .tmp-css-core-section.md .github/workflows/build.yml
-          git commit -m "docs: expand CSS Core answers"
-          git push origin HEAD:${{ github.head_ref }}
-
       - name: Check formatting
         run: npm run format:check