Learn the CSS Box Model by Building a Rothko Painting - Step 34

Tell us what’s happening:
the system is asking me to set my filter to blur and i did it but its not working. can anyone help?

  **Your code so far**
/* file: styles.css */
.canvas {
width: 500px;
height: 600px;
background-color: #4d0f00;
overflow: hidden;
canvas{
filter: blur(2px)
}
}

.frame {
border: 50px solid black;
width: 500px;
padding: 50px;
margin: 20px auto;
}

.one {
width: 425px;
height: 150px;
background-color: #efb762;
margin: 20px auto;
}

.two {
width: 475px;
height: 200px;
background-color: #8f0401;
margin: 0 auto 20px;
}

.three {
width: 91%;
height: 28%;
background-color: #b20403;
margin: auto;
}
/* file: index.html */
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Rothko Painting</title>
  <link href="./styles.css" rel="stylesheet">
</head>
<body>
  <div class="frame">
    <div class="canvas">
      <div class="one"></div>
      <div class="two"></div>
      <div class="three"></div>
    </div>
  </div>
</body>
</html>
  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:104.0) Gecko/20100101 Firefox/104.0

Challenge: Learn the CSS Box Model by Building a Rothko Painting - Step 34

Link to the challenge:

you don’t need the element in the front, because you are already typing inside the .canvas class in css