diff --git a/README.md b/README.md
index 30a6e8d..bcc3e0c 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,15 @@ Please make sure to update tests as appropriate.
 4. To import dependencies, **run**: ```go mod tidy```.
 5. To run tests, **run**: ```go test ./...```.
 
+### CSS (Tailwind) contributing
+
+1. Run `npm install`
+2. After modifying tailwind files (e.g. tailwind.config.js), run `npm run build-css`
+
+If the Mac-only dependency of tailwind (fsevents) silently fails (unlikely), you will get an error
+like `fsevents.watch is not a function`
+
+Then run `npm install fsevents --no-save` and proceed based on NPM's error output. 
 ## Dependencies
 
 * Development environments optimized for **GoLand**
diff --git a/package.json b/package.json
index 7ece7f2..0bf5fb7 100644
--- a/package.json
+++ b/package.json
@@ -3,10 +3,12 @@
     "build-css": "npx tailwindcss -o public/stylesheets/styles.css --watch --minify"
   },
   "dependencies": {
-    "fsevents": "^2.3.3",
     "live-server": "^1.2.0"
   },
   "devDependencies": {
     "tailwindcss": "^3.4.4"
+  },
+  "optionalDependencies": {
+    "fsevents": "^2.3.3"
   }
 }