I tried to setup PrimeFlex (3.0.1) for PrimeFaces (10.0.0). I used css files as provided in dist folder of PrimeFlex repo. Also I followed the instructions give
filedialog
angularjs-material
bull.js
epicor10
enterprise-library-5
flysystem-google-drive
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collabnet
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redlock
wpf-4.0
opengis
xml-serialization
fractals
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