We are trying to override the app.css in a custom lightning component embed in quick action to increase the width of the quick action screen. For this we are try to use the '<style></style>'. But it not supported. However tried to use the <head></head> tag. Still it didn't worked out. What is the alternate or workaround for the same ? how to overwrite app.css styles with lightning components Above link we tried which was working in the 2017 release but currently not working.

  • have to tried to upload the css in static resource and then add that static resource in component? try this? – Ratan Paul Aug 10 at 10:18

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