Simple QR Component Card with Flexbox

Hi Carlos, great job on completing this first challenge! Similar to you, I found that completing this challenge boosted my confidence in my ability to apply my knowledge to practical situations.

Concerning avoiding using pixels explicitly, ems and rems are probably your best bet. Ems are based on the font size of their parent element. If the parent element does not have a specified font size, then the size will be determined by going up the tree until a font size is found. If no font size is found, then the em will generally default to 16px. Therefore, 2em would translate to 32px. If you explicitly set the parent element's font size to 12px instead, then 2em would automatically adjust to be 24px. A problem can arise when using ems, however. You use ems where the parent element also uses ems, you get a compounding effect and things can get out of control quickly. For example, lets say you set an element's font size to 2em. Based on the default size (16px), this would calculate to 32px. But if you then introduce a child element and set the size to 2em, it would be based on the 32px size of the parent element and would calculate to 64px. Because ems can get out of control quickly, rems (or "root ems") were introduced that work very similarly to ems, but they instead base their size on the root element (the html element), and will not compound the way ems do. To learn more, I found this video (https://www.youtube.com/watch?v=_-aDOAMmDHI) and this article (https://www.digitalocean.com/community/tutorials/css-rem-vs-em-units) very helpful!

Other than that, use the screenshot and accessibility reports that FM gives you to continue refining your solution. One thing I learned as I was completing the challenge was that img elements have a display of inline by default, which adds a little extra space between the image and the text underneath it in addition to the margin/padding that you specify. This may help you align your elements more closely to the original.