Spacer used if you want to put some space between column or row.
Step 1:
Select the spacer widget from the left side of the menu bar from your screen then drag and drop it in the selected area.
Step 2:
Select the spacer widget from the left side of the menu bar from your screen then drag and drop it in the selected area.
In the background tab you can give hover effect, can give background type classic or gradient, image, color, location, type(linear, radial), position, attachment(scroll, fixed), size(auto, cover, contain, custom).
In the border tab you can give border type, radius, box shadow and many other things.