CSS Media Queries Test Cases
Microsoft Edge (Chromium) with dual-screen and foldable devices
No screen spanning
@media only all and (screen-spanning: none)
A single fold vertical
@media only all and (screen-spanning: single-fold-vertical)
A single fold horizontal
@media only all and (screen-spanning: single-fold-horizontal)
Kindle Devices (Mobi 7 or Kindle Format 8)
amzn-mobi
@media amzn-mobi
amzn-kf8
@media amzn-kf8
Mozilla Specific
-moz-os-version
@media only all and (-moz-os-version: windows-win10)
More media features specific for Mozilla can found in the MDN web Docs