I have used CC products for 100 years! Built many websites with them.
I am talking about the Device Preview page of Site Designer! I use it to get an idea of how my site would look on a specific device. I use the list that comes with Site Designer but want to Add Moto Z4. I know there must be a conversion from Moto Z4 spec numbers to what is needed for SD. Moto Z4: Resolution 1080 x 2340 pixels, 19.5:9 ratio
(Yes, I use slider, but Device View is neat and nice, too)
Live in a steady joy!