BoxShadow no funciona

$(documento).listo(función () { let r, g, b, rBorder, gBorder, bBorder, top, left;

 setInterval(function () { r = Math.round(Math.random() * 255); g = Math.round(Math.random() * 255); b = Math.round(Math.random() * 255); rBorder = Math.round(Math.random() * 255); gBorder = Math.round(Math.random() * 255); bBorder = Math.round(Math.random() * 255); top = Math.round(Math.random() * window.innerHeight); left = Math.round(Math.random() * window.innerWidth); $('.element') .css({ border: '0px solid #fff', boxShadow: `0px green` }) .animate({ backgroundColor: `rgb(${r}, ${g}, ${b})`, borderWidth: '2px', borderColor: `rgb(${rBorder}, ${gBorder}, ${bBorder})`, boxShadow: `0px 0px 30px 0px rgb(${r}, ${g}, ${b})`, top: top, left: left }, 2000, 'linear'); });

});