HTML, CSS, Flex, media query

Hi! It took me longer than I thought. It took me a while to figure out why justify-content wasn't working as expected. It finally worked when I put the height and the width on .card instead of on .container.

Please give feedback on the quality of my codes and the class names and whatever else you can think. It tried to make it as clean as I can and use the DRY method.

Thanks.

Charissa