QR code component main

You can set the container in the middle of the screen whatever user changes it when you add these properties to it in CSS:

.container {
  display: absolute;
  top:50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

the new feature is transform, it has many lovely properties you can discover, I personally love it. Hope it's useful

Some recommendations regarding your code that could be of interest to you.

In order to fix the accessibility issues:

• You need to replace <div class="qr-container"> with the <main class="qr-container"> tag and <div class="attribution"> with the <footer class="attribution">. You'd better use Semantic HTML, and you can also reach more information about it from Using Semantic HTML Tags Correctly.
• Each main content needs to start with an h1 element. Your accessibility report states page should contain a level-one heading. So, you should use one <h1> element in the <main> tag. You can replace your <div class="first-text">Improve your front-end skills by building projects </div> element with the <h1 class="first-text">Improve your front-end skills by building projects </h1> element.

After committing the changes on GitHub and you need to deploy it as a live site. Finally, you should click generate a new report on this solution page to clear the warnings.

Hope I am helpful. :)

1)image shoult always have alt="some description".some description about image should always be there for accessibility reasons

https://www.davidmacd.com/blog/alternate-text-for-css-background-images.html

2)Read about h1 tag its the most important and every website should have at least one https://www.semrush.com/blog/h1-tag/

3)Read about semantics html tags and use it ,that's imp

4)you can read more about implementing responsiveness such as media queries ,will help you in future

All the best