How to add custom CSS or How to Modify inbuilt CSS of pdftron

Product:

Product Version: “^8.0.1”,

Please give a brief summary of your issue:
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Hi All,
I am trying to apply CSS on button ex : in pdftron there is one button called more.
I want to remove the margin of that button is there anyway to achieve this .

Please describe your issue and provide steps to reproduce it:
(The more descriptive your answer, the faster we are able to help you)

Please provide a link to a minimal sample where the issue is reproducible:

Hi Mujaeit,

Can you please provide the following information:

  1. What platform are you using? (Webviewer, Linux, iOS, etc.)
  2. Input file(s)
  3. Generated output file(s)
  4. Code and settings used to generate (2) from (1)
  5. Screenshots showing the output, and clearly indicating what you expected to get instead, and also clearly indicating the application/browser being used to view.