= Display aspect ratio

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ratio examples
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1     1:1, 1920×1920
1.25  5:4, 1280×1024
1.333 4:3, 1024×768, 1600×1200
1.5   3:2, 2160×1440, ~2560×1700
1.6   16:10, 1280×800, 1920×1200
1.778 16:9, ~1366×768, 1920×1080, 1280×720
1.889 17:9, 4096×2160
3.556 32:9, 3840×1080, 5120×1440
4     4:1, 17280×4320
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