How can I highlight the highest value in each row of a table?

Question

In Google Sheets, I would like to highlight the max value in each row of a table.

I tried using conditional formatting, but without any success so far.

Answer 1

custom formula is:

=(A1=MAX($A1:$D1))*(A1<>"")

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for columns:

=(A1=MAX(A$1:A))*(A1<>"")