CSS Position Properties

Positon has 4 properties: the static relative absolute fixed, the default is static positioning, is the element in the (x) HTML in the order in which the position is assigned, static is not affected by the top right left Bottom influence. When the position of parent layer A is set to relative (relative positioning), and the position of child layer B is set to (absolute positioning), the offset of B is positioned relative to the parent layer a, such as top : A 10px offset causes the top of B to have a 10px distance from the top of a. However, if a is not set relative and B is positioned as absolute,b relative to the browser, top:10px will cause B to appear 10px from the browser.

CSS Position Properties