There are plenty of ways to make the Chart Area stand out on your slide. One method is to use the Fill and Line options to apply a fill and/or a border to the Chart Area. Additionally, you can also apply any of the Effects that PowerPoint provides.
To learn more, choose your version of PowerPoint. If we do not have a tutorial for your version of PowerPoint, explore the version closest to the one you use.
Microsoft Windows:
Effect Options for the Chart Area in PowerPoint 2013
Tutorial Code: 10 02 03
Previous: 10 02 02 Fill and Line Options for the Chart Area in PowerPoint
Next: 10 02 04 Size & Properties Options for Chart Area in PowerPoint