Hi,
I just completed the “challenge yourself” portion of the bootstrap lecture, create 8x8 checkerboard.
I think it’s meant to help you understand boundaries of rows and columns and ways your own custom css applies to each one; at least that’s what it has helped me with.
I’m sharing my code for reference, feedback, encouragement to just write code and make it fun for yourself:
https://codepen.io/buzzy/pen/xxbGWgO
Happy learning!