<!DOCTYPE html>
<html>
<head>
<style>
.gradient {
height: 200px;
width: 200px;
background-color: blue;
background-image: repeating-radial-gradient(#f70000, #f7da00 10%, #005cfa 15%);
}
</style>
</head>
<body>
<div class="gradient"></div>
</body>
</html>