Responsive CSS Flex Layout

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. Change .container to 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(the frontendmentor website). A good alt text would be "QR code leading to the Frontend Mentor website."

• "Improve your" is not a paragraph but a heading. I would make it a <h2> - a page should only have one <h1>, reserved for the main heading. As this is a card heading, it would likely not be the main heading on a page with several components.

CSS:

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

• I like to add 1rem of padding on the body, to ensure the card doesn't touch the edges on small screens.

• Move the properties on .container to body. Change height to min-height - this way, the content will not get cut off if it grows beneath the viewport.

• Remove all widths and heights in px.

• 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.

• On the image, add display: block and change width to max-width: 100% - the max-width prevents it from overflowing its container. Without this, an image would overflow if its intrinsic size is wider than the container. max-width: 100% makes the image shrink to fit inside its container.

• Instead of complex selectors like .container .contain .content, simply select .content.

header to small then p element