loops - Run VBA format code on all sheets with different number of rows -

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vba noob here needs little bit of assistance. cannot seem find solution or work.

i've tried simplify as proof of concept.

the basic idea format 1 cell (a1 say) borders, copy format down across data in first sheet (a1:c10 example), same data in subsequent sheets. i'm struggling subsequent sheets have different number of rows , try formats additional sheets (a1:c10) of original if there no data present.

any appreciated.

what need variable identifies last row of given sheet. instance

lastrow = worksheets("sheet1").cells(65000,1).end(xlup).row

now can loop through cells

for = 1 lastrow   j = 1 3     worksheets("sheet1").cells(i, j)  (apply formatting)   next j next

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