QR code challenge

Hi there,

Cool design! 🎉 Here are some pointers for improvement:

• make use of flexbox to justify and align the the card to the centre of the page, as it currently seems off . You can do something like this:

/* create a <main> in html 
* and put the contents there,  
*then use flexbox on main */

main{
  display: flex;
  justify-content: center;
  align-items: center; 
}

Doing it this way can also help you to create a correct size for the page too like this:

html,
body{
  height: 100%;
}

main{
  min-height: 100%;
}