radial-1c.html
<div style="background: -moz-radial-gradient(100px 100px, closest-side, #ff0000 25px, #0000ff 50px) no-repeat; width: 300px; height: 300px;"><br></div>
<div style="background: -moz-radial-gradient(100px 100px, closest-side, #ff0000 25px, #0000ff 50px) no-repeat; width: 300px; height: 300px;"><br></div>