请问我第二个圆的填充色怎么显示不出来，代码是哪里出错了，谢谢

 window.onload = function(){

        var canvas = document.getElementById("cnavas");

        var cxt = canvas.getContext('2d');

        canvas.width =440;

        canvas.height =90;

        cxt.strokeStyle = "#ecebeb";

        cxt.moveTo(40,42);

        cxt.lineTo(220,42);

        cxt.lineWidth = 5;

        cxt.stroke();

        cxt.beginPath();

        cxt.fillstyle = "blue";

        cxt.arc(45, 45, 25, 0, 2*Math.PI, false);

        cxt.fill();

        cxt.closePath();

}