Question

If an HTML element has following CSS property, what would be its position on the screen?

position: absolute; 
bottom: 0; 
left: 0; 
right: 0; 
top: 0; 

Answer 1

It seems that most browsers actually has the element fill the window (or the parent element, if the parent element has absolute or relative position)

If you add a width declaration to the CSS, however, the left will be enforced and the right will be ignored.

If you add a height declaration, the bottom will be ignored.

http://jsfiddle.net/tjFvL/