canvas.qr{aspect-ratio:1;border-radius:1rem;max-width:25vw;max-height:25vw;width:100%!important;height:auto!important}@media screen and (width<=50rem){canvas.qr{max-width:50vw;max-height:50vw}}@media screen and (width<=30rem){canvas.qr{max-width:100vw;max-height:100vw}}