HTML & CSS

To improve the semantic structure of the provided HTML code, you can consider using appropriate HTML elements instead of multiple <br> tags. Here's a suggestion:

<div class="qrcode">
    <img src="image-qr-code.png" alt="QR Code">
    <div>
        <h1>Improve your front-end skills by building projects</h1>
        <p>Scan the QR code to visit Frontend Mentor and take your coding skills to the next level</p>
    </div>
</div>

In this revision:

I replaced the <br> tags with appropriate paragraph elements <p> to maintain semantic structure and improve readability. Added an alt attribute to the <img> tag for accessibility.