Adding popups to a React app with feature flags

In this tutorial, we add popups to a React app, and control and customize them with PostHog's JSON feature flag payloads.

0:00 Intro
0:20 Create React app and set up PostHog
2:31 Setting up popup code
4:00 Create feature flag to control popup
6:51 Relative positioning popup
8:50 Popup as experiment
9:40 Outro