<!DOCTYPE html>
<html>
<head>
<style type="text/css" media="screen">
.box {
display: inline-block;
height: 120px;
width: 200px;
margin: 10px;
border: 1px solid black;
background-repeat: no-repeat;
}
.radial1 {
background-image: repeating-radial-gradient(white, black 20%);
}
.radial2 {
background-image: repeating-radial-gradient(white 80%, black);
}
.radial3 {
background-image: repeating-radial-gradient(at top left, red, blue 20px, red 40px);
}
.radial4 {
background-image: repeating-radial-gradient(at bottom left, red 10%, blue 30%);
}
.radial5 {
background-image: repeating-radial-gradient(at left, red -10%, blue -5%);
}
.radial6 {
background-image: repeating-radial-gradient(at left, red -10%, blue 105%);
}
.radial7 {
background-image: repeating-radial-gradient(at left, red 90%, blue 105%);
}
.radial8 {
background-image: repeating-radial-gradient(at top, red 2em, blue 3em);
}
.radial9 {
background-image: repeating-radial-gradient(circle at left, red, orange, yellow, green, blue, red 60px);
}
</style>
</head>
<body>
<div class="radial1 box"></div>
<div class="radial2 box"></div>
<div class="radial3 box"></div>
<br>
<div class="radial4 box"></div>
<div class="radial5 box"></div>
<div class="radial6 box"></div>
<br>
<div class="radial7 box"></div>
<div class="radial8 box"></div>
<div class="radial9 box"></div>
</body>
</html>