Note that device or aspectRatio would only be null if the
viewport is narrower than the narrowest device/aspect ratio. This would only
happen if the narrowest device/aspect ratio is not 0-width (which is not
the case with the default breakpoints and is against the recommendation for
setting breakpoints.
Note that device or aspectRatio would only be null if the viewport is narrower than the narrowest device/aspect ratio. This would only happen if the narrowest device/aspect ratio is not 0-width (which is not the case with the default breakpoints and is against the recommendation for setting breakpoints.