Hi Yvonne, are all your blocks on the same sheet and do you want the same rule applied across them?
In Excel for Mac 365, conditional formatting works based on the reference type: use $C$9 for all cells to point to the exact cell, or mixed references like $C9 or C$9 to copy across rows or columns. Format Painter does not reliably copy rules with absolute references, so I recommend selecting all the blocks first and then creating the rule, making sure the “Applies to” range covers all cells.