What are the CSS properties that get elements out of the normal flow?

Only the following properties affects the normal flow of any given element:

• float: right|left
• position: absolute|fixed

Just for completeness:

• display: none removes the element from the flow (strictly speaking the element will not have a flow order)

• position: relative does not change the flow order of the element, but changes its position relative to the normal flow position.

• visibility: hidden will maintain the element on the flow but will not render it to the viewport.