diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index fc5760ff8..026cf9b05 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -45,7 +45,10 @@ Here's what you can do to help:
 - Be sure to run `npm run test`. It is going to run all tests for all snippets.
 - Make a new pull request **only if all the tests are passing**.
 
-
+#### Browser specific tests
+- If your snippet belongs to `browser` category, then you will need to modify the tests to make them work.
+- By default, `Node.js` isn't browser environment. That said we have to use an external package to help us simulate the browser for our tests.
+- We use [jsdom](https://www.npmjs.com/package/jsdom) for our browser specific tests. You can find their [documentation](https://github.com/jsdom/jsdom) on GitHub as well.
 
 ### Additional guidelines and conventions regarding snippets