Aspect-ratio property not working in my css

HTML-CSS
1

Tell us what’s happening:
Describe your issue in detail here.
aspect-ratio property not working in my css, i have tried to change the width against the height as described but it continues not to work
some help please

   **Your code so far**

/* file: index.html */
<!DOCTYPE html>
<html lang="en">
 <head>
   <meta charset="UTF-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
   <meta name="description" content="freeCodeCamp Accessibility Quiz practice project" />
   <title>Accessibility Quiz</title>
   <link rel="stylesheet" href="styles.css" />
 </head>
 <body>
   <header>
     <img id="logo" src="https://cdn.freecodecamp.org/platform/universal/fcc_primary.svg">
     <h1>HTML/CSS Quiz</h1>
     <nav></nav>
   </header>
   <main></main>
 </body>
</html>


/* file: styles.css */
body {
	background: #f5f6f7;
	color: #1b1b32;
	font-family: Helvetica;
	margin: 0;
}

#logo {
 width: max(100px, 18vw);
	aspect-ratio: 35 / 4;
	background-color: #0a0a23;	
	padding: 0.4rem;

}


   **Your browser information:**

User Agent is: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:79.0) Gecko/20100101 Firefox/79.0

Challenge: Step 9

Link to the challenge:

2

Hmm, your #logo CSS is passing for me. Ahh, I think I see it now, you’re using a very old version of Firefox and it might not actually support the aspect-ratio property. I would upgrade to the newest version.

3

thanks, let me try to update my browser

4

I just checked caniuse and sure enough, it looks like support for aspect-ratio didn’t become universal in FF until version 89.

5

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