Add Borders ! PLEASE HELP!

Tell us what’s happening:

Your code so far

<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
<style>
  .thick-green-border
  {
    border-color: green;
    border-width: 10px;
    border-style: solid;
  }
  
  
  .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="thick-green-border" "smaller-image" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back. ">

<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 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 Edge/16.16299.

Link to the challenge:
https://www.freecodecamp.org/challenges/add-borders-around-your-elements

A good compact way to do borders in CSS is:

border: size style color;

Example (https://www.w3schools.com/css/css_border.asp):

border: 1px solid black;

If you want to add rounded corners to your border:

border-radius: size;

Examples:

border-radius: 20px;
border-radius: 10px;

To make a circle you do:

border-radius: 90px;