My "border" is a box - not a border

My "border" is a box - not a border
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#1

Tell us what’s happening:

I get a green square to the right of the image, but not a border. What is wrong here?

Your code so far

<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
<style>
  
   .thick-green-border {
    border-width: 10px;
    border-style: solid;
    border-color: green;
  }
  
  .red-text {
    color: red;
  }

  h2 {
    font-family: Lobster, Monospace;
  }

  p {
    font-size: 16px;
    font-family: Monospace;
  }

  .smaller-image {
    width: 100px;
  }
  

</style>

<h2 class="red-text">CatPhotoApp</h2>

<img class="smaller-image" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back. " >
<img class="thick-green-border" >

<p class="red-text">Kitty ipsum dolor sit amet, shed everywhere shed everywhere stretching attack your ankles chase the red dot, hairball run catnip eat the grass sniff.</p>
<p class="red-text">Purr jump eat the grass rip the couch scratched sunbathe, shed everywhere rip the couch sleep in the sink fluffy fur catnip scratched.</p>

Your browser information:

Your Browser User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36.

Link to the challenge:


#2

You have two image tag. the second one is the green box.

<img class="thick-green-border" >