If Conditional formatting is not applying to all cells in Excel or Google Sheets, you need to check the formatting and rules.

Use Excel's conditional formatting to flag status changes, budget issues, missing data, duplicates, and deadlines ...

Have you ever spent hours perfecting your Excel spreadsheet, only to watch your carefully crafted formatting fall apart the moment you insert a new row? It’s a maddeningly common issue for Excel users ...

Reporting lots of large values in Excel is probably a good thing, but if you want them to be readable, try this easy technique. The article, Use a custom format in Excel to display easier to read ...

Learn how to add a highlight to expose groups in your Microsoft Excel data using a helper column and Excel’s conditional formatting feature. The article, How to use a border to discern groups more ...