fix: Add nixpacks configuration for Astro deployment

dealplustech-astro/node_modules/csso/lib/clean/Raw.js

@@ -0,0 +1,9 @@
+import { isNodeChildrenList } from './utils.js';
+
+export default function cleanRaw(node, item, list) {
+    // raw in stylesheet or block children
+    if (isNodeChildrenList(this.stylesheet, list) ||
+        isNodeChildrenList(this.block, list)) {
+        list.remove(item);
+    }
+};