How to Make Gridlines Darker in Microsoft Excel
- George Apostolov
- 05 Sep 2025
Guide
Select the cells where you want darker gridlines.
Go to the "Home" tab, select "Borders" dropdown and click "More Borders."
Choose a bold solid line style and select a color (e.g., blue).
Click "Outside" and "Inside" for the preview, then click "OK."
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