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 In this tutorial, we'll cover the challenges when working with the classic 100vh unit for making full-screen sections and discuss some great alternative CSS units.
 
-Click on the buttons and check the demo from a mobile device to see the different behavior of these units.
+Click on the buttons and check the [demo](https://geomarts.github.io/viewport-relative-css-units/) from a mobile device to see the different behavior of these units.
 
 **Available on Tuts+ Spring 2024**