Represents the environmental metrics of a page or window.
This data is updated whenever the platform window or layout changes,
such as when rotating a device, resizing a browser window, or adjusting
system UI elements like the keyboard or safe areas.
device_pixel_ratio: float
The number of device pixels for each logical pixel.
The space surrounding the entire display, accounting for system UI
like notches and status bars.
Areas obscured by system UI overlays, such as the on-screen keyboard
or system gesture areas.
Similar to padding, but includes padding that is always reserved
(even when the system UI is hidden).