why doesn't all my gridlines show up on my excel spreadsheet?

I

ice1955

Only some of my gridlines do not show on my excel spreadsheet nor do they
print. I have made sure the gridlines on the whole spreadsheet are not
hidden, and the selection has been made to print gridlines. But for some
reason a few gridlines do not print and do not show when viewed. Can anyone
help me with this problem?
 
B

Bob I

Frequent cause is someone placed a color background in the cell. White
background would make this less obvious.
 
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