You can make contents bold when you want to emphasize them. To bold the contents in Excel, please follow steps below:
Step 1: Select the cell or area you need to bold;
Step 2: Click the "Home" Tab from Ribbon;
Step 3: Click the command "making text bold", see below;
Step 4: After you will find the contents are all bold.
Tips: If you like to use shortcuts, you can use Excel shortcut "Ctrl+B" to bold the data.