Cell borders and fill colors allow you to create clear and defined boundaries for different sections of your worksheet. Below, we'll add cell borders and fill color to our header cells to help distinguish them from the rest of the worksheet.

Select the cell(s) you want to modify.

On the Home tab, click the drop-down arrow next to the Fill Color command,

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then select the color schema you want to use.

then select the fill header cell color you want to use.

then select the fill color you want to use.

then select the Layout you want to use.