Responsive landing page for frontend mentor qr code component challeng

Replace <div class="container"> with the main tag and <h2> with <h1> to fix the accessibility issues. click here for more on web-accessibility and semantic html

To center .qr-block on the page using flexbox or grid instead position: absolute, add min-height:100vh; display: flex; align-items: center: justify-content: center; or min-height:100vh; display: grid place-items: center to the body.

To center .qr-block on the page using flexbox:
body{
min-height: 100vh;
display: flex;
align-items: center;
justify-content: center;
}

To center .qr-block on the page using grid:
body{
min-height: 100vh;
display: grid;
place-items: center;
}

There is no need to style .container on.

Use relative units like rem or em as unit for the padding, margin, width values and preferably rem for the font-size values, instead of using px which is an absolute unit. For more on CSS units Click here

Hope am helpful.

Well done for completing this challenge. HAPPY CODING