Looks good! Tips to improve:
- Try to focus more on semantic tags, read about them and understand how to use them properly
- Proper naming for classes/ids to describe what is the component you are working on, like "card-container, card__qr-code, card__description". With such approach it would be much easier to understand which part of component you are working on the bigger project.
- You used ids to style components, which bring incosistency. While styling your components use classes. I would suggest to use ids for some specific cases when you want to style exact component, not a group of, and also for javascript manipulation.
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