https://teamtreehouse.com/community/shouldnt-1-at-pixel-ratio-of-2-be-4-pixels
Ian Pottmeyer is having issues with: Since it's being doubled both vertically and horizontally, the 1x1 pixel becomes a 2x2 square, aka 4 pixels.
pixel ratio
https://blisk.io/devices/details/iphone-16-plus
Stay up-to-date with the latest iPhone 16 Plus features: viewport, screen size, CSS pixel ratio, CSS media query, and cross-browser compatibility, all...
screen sizepixel ratioiphoneplusviewport