Important CSS properties
Position Elements with CSS
static
This is the default value and specifies that the element is positioned according to the normal flow of document content
absolute
If an element uses absolute positioning, its top and left properties are interpreted rel- ative to the closest ancestor element that has its position property set to something other than static. If an absolutely positioned element has no positioned ancestor, the top and left properties are measured in document coordinates
relative
If you wish to absolutely position an element relative to a container that is part of the normal document flow
fixed
This value allows you to specify an element’s position with respect to the browser window
Borders, Margins and Padding
Element Display and Visibility