Try to work out with padding, as you can see on the preview it is too big.
Maybe try "em" instead of "%" or get rid of padding and focus on each element width?
Other than that, well done!
If u want some code to check, here is my attempt of this challenge: https://www.frontendmentor.io/solutions/qr-code-component-qgm4m_84z
Good luck and have fun with other projects!
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