CSS Treehouse Club: CSS My First Web Page Changing Your HTML

The question asks for me to change the image tag from <img src="joy.jpg" alt="joy"> to <img src="sam.jpg" alt="sam">

Why wont it let me move forward, also every time I click recheck work, a style.css keeps downloading? what do I do?

index.html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <title>All About Joy's Page</title>
    <link href='http://fonts.googleapis.com/css?family=Open+Sans' rel="stylesheet" type="text/css">
    <link href="style.css" rel="stylesheet">
  </head>   
  <body> 
    <img src="sam.jpg" alt="sam">

    <h1>Devin</h1>

    <h2>My Professor</h2>

    <h3>I Live</h3>

    <h4>What I do:</h4>
       <p>I'm a teacher at Treehouse, but you should write in what you do here!</p>

    <h4>What I enjoy doing:</h4>  
      <p>When I'm not writing code, I like to surf and play music. Your turn, write in something that makes you happy, or things you like to do in your free time.</p>

  </body>
</html>
style.css
/***********************************************
Top bar color 
***********************************************/
html {
  border-top: 20px solid #8A85A5;
}

/***********************************************
Body styling 
***********************************************/
body {
  max-width: 600px;
  margin: 0 auto;
  padding: 20px 20px;
  font-size: 1.3em;
  line-height: 1.6em;
  font-family: Helvetica Neue, Helvetica, Arial, serif;
  color: #777;
  font-weight: 300;
}

.centered {
  text-align: right;
}

/***********************************************
Image styling 
***********************************************/
img {
  border-radius: 100%;
  max-width: 340px;
}

/***********************************************
Headline styling 
***********************************************/
h1 {
  font-size: 1.5em;
  line-height: .5em;
  color: #564581;
}

h2 {
  font-size: 1em;
  line-height: 1em;
  font-style: oblique;
  color: #aaa;
}

h3 {
  font-size: .875em;
  line-height: 1em;
  font-weight: normal;
}

h4 {
  margin-top: 60px;
  font-weight: 500;
  color: #564581;
}
Kenneth Crocken
Kenneth Crocken
10,672 Points

It was an experiment ... never mind ...

Perhaps the test is case sensitive. Have you tried to capitalize sam in the alt attribute?

<img src="sam.jpg" alt="Sam">

Yea I double checked my letters, it is case sensitive. I'm still curious to why "style.css" files kept downloading though. oh well but thanks again.