Understanding Navbar Styling- Project 3 (Landing Page)

Hello!

I’m working my way through the challenges, and I’m really trying to focus on understanding styling for this challenge. I don’t understand how the example page stretches list items in the navbar (Features, How it Works, Pricing) across the top.

Example page:

https://codepen.io/freeCodeCamp/pen/RKRbwL

My WIP page:

https://codepen.io/boblar/pen/xxKVMGy?editors=1100

My list items are stacked on top of each other and don’t look nearly as nice as the example items. What am I missing?

I got it- it looks like it was the section about the nav > ul- the part about the row flex-direction (I think.)