Frontend Mentor | Mobile-first solution using CSS Flexbox coding challenge solution

@Islandstone89

Posted 2 days ago

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 the card in a <main>.
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 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:

It is best practice to write CSS in a separate file, often called style.css. Create one in the same folder as the index.html, and link to it in the <head>: <link rel="stylesheet" href="style.css">.
Including a CSS Reset at the top is good practice.
Remember to specify a fallback font:font-family: 'Outfit',sans-serif;
Remove the margin on body.
I would recommend adding 1rem of padding on the body, to ensure the card doesn't touch the edges on small screens.
Remove the margin on the card.
To center the card horizontally and vertically, I would use Flexbox on the body:

display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
min-height: 100svh;

Remove the width on the image.
Remove the width on the card - it's rarely a good idea to set fixed sizes, as we need our components to shrink and grow in response to all kinds of different devices.
We do want to limit the width of the card, so it doesn't get too wide on larger screens. Give the card a max-width of around 20rem to solve this issue.
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.
Paragraphs have a default value of font-weight: 400, so there is no need to declare it.
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, add display: block and 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. Remove the margin, though you could give it a margin-bottom.
To create the space between the image and the edge of the card, set padding on all 4 sides of the card:padding: 1rem;.

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Mobile-first solution using CSS Flexbox