HTML, or Hypertext Markup Language, is the language we use to specify the structure of our document. It is composed of a series of tags that form elements.
You can "change" the default behavior of a type of element by changing its
display property with CSS.
A block element assumes that it has a break before and after it, meaning that, by default, it takes up a single line all to itself.
Examples of block elements:
Unlike, block elements, inline elements do not assume a break before and after, and therefore can share a line with text and other inline elements.
Examples of inline elements: