Excel will then place a dotted line around the selected cell or cells to let you know that something has been copied (in this case, the formatting), and your cursor will change to a paintbrush icon.

In Excel, there are options to add both predefined cell borders and custom cell borders. 1] How to add borders to a cell in an Excel worksheet Open Microsoft Excel. Click on a cell in the worksheet.

This can ruin a beautiful excel model. And it can take awhile to fix because you have to find the problem cell. The F5 key saves time in Excel by letting you jump to specific cells or named ranges.