Text Shadow in CSS

Given some text, add a red shadow to it, shifted down by 5px, to the right by 10px and blurred by 3px.

Given some text, add a green shadow to it, shifted up by 5px, to the left by 10px, and without blur.

Given text, add a shadow of the same color, shifted up by 10px, to the right by 15px, without blur.

Given text, add a green shadow to it, without shifts, but with a blur of 5px.

Given text. Add two shadows to it - red and green. Let the first be on top, and the second below.