The chart area is the entire area of a chart frame.
Edit properties: To change the properties of the chart area, select it, right-click it to open the context menu and choose the command Chart area: Properties.
Tip: Alternatively, you can choose this command via the Edit properties icon 
on the ribbon tab Chart | group Chart elements. The other alternative is to simply double-click on the chart area.
You can make the following settings:
Format tab
Tip: Borders and fill can also be conveniently adjusted directly via the buttons of the ribbon tab Chart | group Chart elements. For more information, see Editing chart elements.
▪Border section
| Here, you can add a border to the entire chart. Auto gives the chart a thin gray standard line as a border. None removes the border. The option Custom lets you customize the line style. |
| If you enable the option Shadow, the chart frame will also be highlighted with a shadow. The Adjust button opens additional settings for the appearance of the shadow effect. |
▪Fill section
| Here, you can change the fill of the chart area. Auto gives the chart area a white fill area. The fill will be transparent if you use the option None. You can use the option Color to customize the color for the fill. |
| If you select the fill type Effects and click on the Customize button, the program will display a dialog box that will allow you to also apply more complex fills (such as a color gradient). The use of this dialog box is described in Object properties, Fill tab. |
Font tab
Here, you can change the text formatting for all chart elements.
To do so, select the desired font, font size, alignment, etc.
Important: Changes will affect all chart elements, even if they were previously formatted in a different font.