CSS related position = absolute (absolute positioning is relative to WHO)

In CSS, there is an absolute positioning method. In the past, I had never understood who the absolute positioning is relative.

 

It is clear that it is neither relative to the parent element nor to the body.

 

The nearest adjacent element in the element tree that identifies the position attribute.

 

For example

 

Code
< Div ID = "" Style = "Position: relative" >
< Div ID = "B" >
< Div ID = "C" Style = "Position: absolute" >
</ Div >
</ Div >
</ Div >

 

Div # C is the absolute positioning based on Div #.