I have a macbook pro, OS 10.14.4 The vertical gridlines between column A and B have disappeared from line 126 to 264 on my calc spreadsheet. How do I get them back?

[iluveskies]

How do I get my vertical gridlines back in calc. Missing between column A and B from line 126 to 264

[Hrbrgr]

This is Standard visible cells:

You can see the cells e.g. white with the background color. Then you can not see any lines anymore.

You can change this again by:

1. The background color is set to "No fill.

2. Make the cells with a border:

I wish you success!