<!DOCTYPE html>
<html>
<head>
<style>
body {
font-size: 18pt;
}
.filtered {
filter: blur(10px);
}
div {
display: inline-block;
width: 20px;
height: 1em;
background: green;
}
</style>
</head>
<body>
<div></div><div></div><span class="filtered"><div></div><div></div></span><div></div><div>
</body>
</html>