<!doctype html>
<html>
<head>
<style>
.circle {
border:10px solid;
border-radius: 50%;
width: 200px;
height: 200px;
background: rgb(25,240,0); /* Gradient color */
background: -moz-linear-gradient(top, rgba(25,240,0,1) 0%, rgba(255,255,255,1) 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(25,240,0,1)), color-stop(100%,rgba(255,255,255,1))); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, rgba(25,240,0,1) 0%,rgba(255,255,255,1) 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, rgba(25,240,0,1) 0%,rgba(255,255,255,1) 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, rgba(25,240,0,1) 0%,rgba(255,255,255,1) 100%); /* IE10+ */
background: linear-gradient(to top, rgba(25,240,0,1) 0%,rgba(255,255,255,1) 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#19f000', endColorstr='#ffffff',GradientType=0 ); /* IE6-9 */
}
</style>
<head>
<body>
<div class="circle">
</div>
</body>
</html>
Please utilize the specified background gradient color in your design. I trust this will be of assistance to you
For a live demo, click here Demo