设计发光的球体

HTML

<div></div>
					    

CSS

* {
    margin: 0;
    padding: 0;
}
div {
    width: 300px;
    height: 300px;
    border-radius: 100%;
    margin: 50px auto;
    background-image: -webkit-radial-gradient(8em circle at top, hsla(220,89%,100%,1), hsla(30,60%,60%,.9));
    background-image: radial-gradient(8em circle at top, hsla(220,89%,100%,1), hsla(30,60%,60%,.9));
}