block-level / block level definition

 A block-level box is one in which an element box takes over the full width of a parent’s content area and pushes other elements away from its sides.  A break exists before and after a block-level element.  A div is an example of a block-level element.  Display values that make block-boxes include all CSS Advanced Layout templates and: block, list-item, table-caption, table-cell, table-column-group, table-row, table-footer-group, table-header-group, table-row-group, table, list-item, and block.