Spacer utility classes can be used for adding vertical spacing between two elements. Ideally, spacers are best suited for adding spacing in place of top or bottom margin or padding for elements that only use utility class(es) and have no specific named class associated with it. When an element has a named class associated with it, it is better to apply margin and padding to the class itself, when possible.
Spacer utility classes are available for the following breakpoints: lg, md and sm. All spacing units adhere to the 8pt grid system.