box-shadow: offset-x offset-y blur-radius spread-radius rgba(0, 0, 0, opacity) inset;
text-shadow: offset-x offset-y blur-radius rgba(0,0,0 opacity);
box-shadow: offset-xpx offset-ypx blur-radiuspx spread-radiuspx rgba(0, 0, 0, opacity) inset;
text-shadow: offset-xpx offset-ypx blur-radiuspx rgba(0, 0, 0, opacity) inset;