You want your pages to look nice on a mobile phone when you're doing QR code marketing.
However, you also want them to look nice on a desktop if you're asking people to share links.
You might even be buying ads on facebook or google and want a landing page that looks good on either platform.
Have a look at this video about the newest scan2 layout's on the landing pages, especially the listing one, they scale beautifully.
To see an example of the real estate listing page you can visit this link: Scan2See.co/deal/listing
You can try it for free at Scan2.co/signup