You can make text stand out by adding a shadow or an outline to it.
Select the text you want to change.
Click the Style button near the top of the sidebar on the right.
If you don’t see a sidebar, or it doesn’t have a Style button, click 
in the toolbar. If the text is in a text box, table, or shape, first click the Text tab at the top of the sidebar, then click the Style button.
In the Font section, click 
, then select or deselect the Outline checkbox.
Select the text you want to change.
Click the Style button near the top of the sidebar on the right.
If you don’t see a sidebar, or it doesn’t have a Style button, click in the toolbar. If the text is in a text box, table, or shape, first click the Text tab at the top of the sidebar, then click the Style button.
In the Font section, click , then select the Shadow checkbox.
Use the controls to adjust the appearance of the shadow:
Blur: Click the arrows to increase or decrease the sharpness of the shadow.
Offset: Click the arrows to change the amount of space between the text and the shadow.
Opacity: Make the shadow more or less transparent.
Angle: Drag the Angle wheel to change the direction of the light source. You can also enter a value in the field next to the wheel.
Color: Click the left color well to choose a color for the shadow that coordinates with other template elements. To choose any color, click the color wheel on the right.
To remove a shadow, select the text, then deselect the Shadow checkbox.