2020年8月13日 — A fixed position element is positioned relative to the viewport, or the browser window itself. The viewport doesn't change when the window is ...
An element with position: absolute; is positioned relative to the nearest positioned ancestor (instead of positioned relative to the viewport, like fixed).
2024年2月28日 — A positioned element is an element whose computed position value is either relative , absolute , fixed , or sticky . (In other words, it's ...