The web is growing up. We are building applications that work entirely in the browser. They are responsive; they have tons of features and work under many devices. We enjoy providing high-quality code that is well structured and tested. But what matters in the end is the impact for clients. Are they getting more products sold or are there more visitors for their campaign sites? The final results usually show if our project is successful. And we rely on statistics as a measuring tool. We all use instruments like [Google Analytics](https://www.google.com/analytics/). It is a powerful way to collect data. In this article, we will see a CSS-only approach for tracking UI interactions using Google Analytics.