responsive QR page done using css flexbox

Amazing job with this! You’re making fantastic progress. Here are some small tweaks that might take your solution to the next level…

• Using a full modern CSS reset is beneficial because it removes default browser styling, creating a consistent starting point for your design across all browsers. It helps avoid unexpected layout issues and makes your styles more predictable, ensuring a uniform appearance on different devices and platforms, check out this site for a Full modern reset

• For future project, You could download and host your own fonts using @font-face improves website performance by reducing external requests, provides more control over font usage, ensures consistency across browsers, enhances offline availability, and avoids potential issues if third-party font services become unavailable. Place to get .woff2 fonts

• While px is useful for precise, fixed sizing, such as border-width, border-radius, inline-padding, and <img> sizes, it has limitations. Pixels don't scale well with user settings or adapt to different devices, which can negatively impact accessibility and responsiveness. For example, using px for font sizes can make text harder to read on some screens, Check this article why font-size must NEVER be in pixels. In contrast, relative units like rem and em adjust based on the user’s preferences and device settings, making your design more flexible and accessible. Use px where exact sizing is needed, but prefer relative units for scalable layouts. If you want a deeper explanation watch this video by Kevin Powell CSS em and rem explained. Another great resource I found useful is this px to rem converter based on the default font-size of 16 pixel.

• Using max-width: 100% or min-width: 100% is more responsive than just width: 100% because they allow elements to adjust better to different screen sizes. To learn more, check out this article: responsive-meaning.

You’re doing fantastic! I hope these tips help you as you continue your coding journey. Stay curious and keep experimenting—every challenge is an opportunity to learn. Have fun, and keep coding with confidence! 🌟

If you want to make your card responsive with ease you can use this technique:

.card {
width: 90%;
max-width: 37.5rem;
}

On the smaller screens card will be 90% of the parent (here body), but as soon as the card will be 37.5rem (600px) it will lock with this size.

Also to put the card in the center I advise you to use this code snippet:

.container {
display: grid;
place-items: center;
}

Hope you found this comment helpful 💗💗💗

Good job and keep going 😁😊😉