Need help with tech doc

I cannot figure this out the navbar stays left no matter what screen size and it still wont let me pass. https://codepen.io/Dikdollan/pen/gOwxPPN

I think i figured out it seems it will only allow me to accomplish this goal with display flex to the body.

Welcome there,

You have no CSS targetting the #navbar, and so the default is given to the element:

As such, it is wider than the left half of the screen. The error message from the test explains this.

Hope this helps

thank you for responding. I have figured it out.