width: 320px;
height: 320px;
background: #472B88;
backdrop-filter: blur(360px);
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
* {
margin: 0;
padding: 0;
list-style: none;
text-decoration: none;
}
body {
background: #000;
filter: blur(100px);
}
.fcirc,.scirc {
width: 400px;
height: 400px;
border-radius: 200px;
position: absolute;
}
.fcirc {
background: purple;
right: 10px;
top: 10px;
}
.scirc {
background: pink;
right: 160px;
top: 170px;
}
</style>
</head>
<body>
<div class="fcirc"></div>
<div class="scirc"></div>
</body>
</html>
Простой