CSS can be added to the source of a simpleXML / classic dashboard (not Dashboard Studio). This is a very old post - you should start your own question which more specific information about your particular usecase so we can give you more targeted and relevant information.
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if the values are in severity are showing as P1, P2, Or P3 then I could able to resolve it. But in the current scenario some time I am getting P3 only for one date for the remaining two I need to showcase as P1 value as NA and P2 value as NA
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