Get your own website Result Size: 625 x 565
x
 
<!DOCTYPE html>
<html>
<head>
<style>
img.background {
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0px;
  top: 0px;
  z-index: -1;
  filter: blur(35px);
}
img.circle {
  border-radius: 50%;
  display: block;
  margin: 0 auto;
  height: auto;
  max-width: 60%;
}
</style>
</head>
<body>
<h1>The filter Property</h1>
<p>Blurred background:</p>
<img class="background" src="pineapple.jpg" alt="Pineapple" width="300" height="300">
<img class="circle" src="pineapple.jpg" alt="Pineapple" width="300" height="300">
</body>
</html>