hey. I think the picture was supposed to be in the border-box with text.
If you added a div and added either a class or ID with the name Border-box or any other name. Then you can add the imag tag within that Div alongside with the text. I hope this helps.
<div class="border-box">
<img src="images/image-qr-code.png" alt="This is a qr code" class="image">
<h1 class="subheading">Improve your front-end skills by building projects</h1>
<p class="paragraph">Scan the QR code to visit Frontend Mentor and take your coding skills to the next level</p>
</div>