Next, remove the width and height from .bb2a, and change the border-left and border-right to use 5vw instead of 1vw. The element will now have zero size and the borders will come together in the middle.
It is great that you solved the challenge, but instead of posting your full working solution, it is best to stay focused on answering the original poster’s question(s) and help guide them with hints and suggestions to solve their own issues with the challenge.
We are trying to cut back on the number of spoiler solutions found on the forum and instead focus on helping other campers with their questions and definitely not posting full working solutions.