Help wanted for Flex Assessment Task 4

Task here

Code here

In the original task the required output appears to be centre-aligned. My code appears to left-aligned. Is there something missing, or am I just being too picky about the required output?

Thanks!

I was confused about this same thing. On my browser, it seems like the

    tag is hardcoded at 450px, meaning the content will appear to be left aligned within the rendered sample code display box, which adjusts with the browser window width. So in reality, the actual width of the
      flexbox is set to 450px, meaning the demo code display will match the answer key image.