Simple HTML/CSS showing QR code

Hi Ngmaibulat, congratulations on completing the challenge, great job! 😁

Some little tips for optimizing your code:

• add main tag and wrap the card for improve the Accessibility
• also you can use article tag instead of a simple div to the container card for improve the Accessibility
• add descriptive text in the alt attribute of the images
• use h1 tag for the title of card and not div with class
• use p tag for the text of card and not a span
• centering a div with absolute positioning is now deprecated, it uses modern css like flexbox or grid
• use flexbox to the body to center the card. Read here -> best flex guide
• after, add min-height: 100vh to body because Flexbox aligns child items to the size of the parent container
• instead of using px use relative units of measurement like rem -> read here

Hope this help! Happy coding 😉