Hi i'm stuck on step 11 help me please

Tell us what’s happening:
Describe your issue in detail here.

  **Your code so far**
/* file: styles.css */
.canvas {
width: 500px;
height: 600px;
background-color: #4d0f00;
}
/* 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="canvas">
</div>
<div class="frame">
</div>

</body>




      **Your browser information:**

User Agent is: <code>Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36</code>

**Challenge:**  Step 11

**Link to the challenge:**
https://www.freecodecamp.org/learn/2022/responsive-web-design/learn-the-css-box-model-by-building-a-rothko-painting/step-11

you should put the frame class around the canvas class to establish a sort of hierachy like this:

<div class="frame">
  <div class="canvas">
  </div>
</div>