"QR Code Component" using Flexbox

HTML:

• Every webpage needs a <main> that wraps all of the content, except for <header> and footer>. This is vital for accessibility, as it helps screen readers identify a page's "main" section. Wrap .container in a <main>.

• The alt text should be written naturally, without using - between the words. Write something short and descriptive, without including words like "image" or "photo". Screen readers start announcing images with "image", so an alt text of "image of qr code" would be read like this: "image, image of qr code". The alt text must also say where it leads(frontendmentor.io).

• Headings should always be in order, so you never start with a <h3>. Change it into a <h1>.

• .attribution should be a <footer>, and you should use <p> for the text inside.

CSS:

• Including a CSS Reset at the top is good practice.

• Move font-family to body.

• Add around 1rem of padding on the body, so the card doesn't touch the edges on small screens.

• Remove all widths and heights in px and %.

• Add a max-width of around 20rem on the card, to prevent it from getting too wide on larger screens.

• font-size must never be in px. This is a big accessibility issue, as it prevents the font size from scaling with the user's default setting in the browser. Use rem instead.

• Since all of the text should be centered, you only need to set text-align: center on the body, and remove it elsewhere. The children will inherit the value.

• On the image, remove the margin, and add display: block and max-width: 100% - the max-width prevents it from overflowing its container.

• To create the space between the image and the edge of the card, set padding on all 4 sides of the card.