How to Add a Border on
Google Slides
Open your Google Slides presentation.
Click on the shape, text box, or image you want to add a border to.
In the toolbar, click the "Border color" icon (pencil symbol).
Select a color for the border.
Click the "Border weight" icon to adjust the thickness.
Optionally, click the "Border dash" icon to change the style.
Click outside the object to apply the changes.