See how to insert border in Excel by using the predefined options and create your custom cell border style.
Apply or remove cell borders on a worksheet - Microsoft Support
Excel: How To Add And Create Borders
How to create cell border in Excel
Excel: How To Add And Create Borders
How to add borders in Excel on iPad : r/excel
How to create cell border in Excel
How to add borders in Excel on iPad : r/excel
Excel: How To Add And Create Borders
Apply or remove cell borders on a worksheet - Microsoft Support
Apply or remove cell borders on a worksheet - Microsoft Support
How to create cell border in Excel