The fastest way to make a border in Excel is to apply one of the inbuilt options directly from the ribbon.
Microsoft Excel offers a few different ways to add a border around a single cell or a ranges of cells. When printing out a document, the borders will appear on printed pages regardless of whether you print gridlines or not. Unlike gridlines, cell borders do not appear in a worksheet by default, you need to apply them manually.
Please do not confuse cell borders with worksheet gridlines. For example, you can insert a border to draw attention of viewers to totals or other important data on the sheet.
Generally, cell borders are used to accent a specific section of a spreadsheet to make it stand out. Border is a line around a cell or a block of cells in Excel.