Regardless of whether your Excel spreadsheet contains a little or a lot of data, you may want to have cells that meet certain criteria stand out. Excel lets you set some conditional formatting rules ...

Launch Microsoft Excel. To highlight lines in an existing Excel document, click the "File" tab. Click "Open," browse to the spreadsheet and double-click it. Otherwise, Excel opens a new spreadsheet ...

All the cells of negative numbers will become red, while the positive numbers will remain the same. Click Conditional Formatting button in the Styles group. Click New Rule in the menu. Select a style, ...