Using Transparent Borders
Rectangles have a transparent border option. This allows you to create a rectangle, circle, or ellipse with a fill but no border:

To create a shape with a transparent border
1. Click on the shape to display the object properties.
2. Find the Line properties on the Object property page.
3. Click on the Style value field under Line.
4. Click on
in the Style value field to display the drop-down
list.
5. Select Transparent from the drop-down list. The selected shape will be displayed without a border.