Yes it's impossible to make your site look identical on every single one of your visitors' screens.

array of mobile devices for testing mobile versions of websites for Google display
But
that doesn’t matter (they’re not all comparing notes), what does matter is that everyone can view the business-critical information.

My sites detect the device-type and the browser being used and presents a version most suited to that device.

I own a huge array of hardware, old phones, the worst Windows laptop and the highest-spec Apple devices.

An additional part of my service is to test your site on all these devices, if you’re looking for optimum consistency.