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A block on a webpage is an HTML element that appears underneath the preceding element and above the following element. For example, <p>
is by default a block-level element, whereas <a>
is not (i.e., by default you can put a link in the middle of a paragraph; the link doesn't have to start its own line). Using display
you can change whether an element displays inline or as a block (among many other options).
Blocks are subject to the effects of positioning schemes and use of the position property.