Personal Portfolio Webpage - Build a Personal Portfolio Webpage

I keep getting this error: Your portfolio should contain at least one element with a class of project-title

  **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">
  <link rel="stylesheet" href="styles.css">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<title>Personal Portfolio Webpage</title>
  </head>
  <body>
<section id="welcome-section">
<h1><span class="bold">Hey I am a Mimic</span>  web developer</h1>
<nav id="navbar">
<ul>
  <a href="#welcome-section">About</a>
  <a href="#projects">Work</a>
  <a href="#contact">Contact</a>
  </ul>
</div>
</section>
<section class="project-title" id="projects">
<div class="head">
<p>These are some of my projects</p>
<hr></hr>
</div>
<div id="projects">
  <div>
<p class="project-title row"><a target="_blank" id="profile-link" href="https://codepen.io/freeCodeCamp/full/zNqgVx"><img src="https://cdn.freecodecamp.org/testable-projects-fcc/images/tribute.jpg"></a>Tribute Page</p>
</div>
<div>
  <p class="project-title column"><a target="_blank" id="profile-link" href="https://codepen.io/freeCodeCamp/full/qRZeGZ"><img src="https://cdn.freecodecamp.org/testable-projects-fcc/images/random-quote-machine.png"></a>Random Quote Machine</p>
</div>
<div>
  <p class="project-title row"><a target="_blank" id="profile-link" href="https://codepen.io/freeCodeCamp/full/wgGVVX"><img src="https://cdn.freecodecamp.org/testable-projects-fcc/images/calc.png"></a>JavaScript Calculator</p>
</div>
<div>
  <p class="project-title column"><a target="_blank" id="profile-link" href="https://codepen.io/freeCodeCamp/full/mVEJag"><img src="https://cdn.freecodecamp.org/testable-projects-fcc/images/map.jpg"></a>Map Data Across The Globe</p>
</div>
<div>
  <p class="project-title row"><a target="_blank" id="profile-link" href="https://codepen.io/freeCodeCamp/full/wGqEga"><img src="https://codepen.io/freeCodeCamp/full/wGqEga"></a>Wikipedia Viewer</p>
</div>
<div>
  <p class="project-title column"><a target="_blank" id="profile-link" href="https://codepen.io/freeCodeCamp/full/KzXQgy"><img src="https://cdn.freecodecamp.org/testable-projects-fcc/images/tic-tac-toe.png"></a>Tic Tac Toe Game</p>
</div>
</div>
<div>
<button type="submit">Show all </button>
</div>
</section>
<section>
<div class="text">
<p><span class="bold">Let's work together...</span> How do you take your coffee?</p>
</div>
<div id="contact">
  <ul>
<i class="fa fa-facebook">Facebook</i>
<i class="fa fa-twitter">Twitter</i>
<i class="fa fa-github">Github</i>
<i class="fa fa-phone">Call me</i>
<i class="fa fa-envelope">Send a mail</i>
    </ul>
  </di>
</section>
<footer>

</footer>
    </body>
</html>
/* file: styles.css */
*{
width: 100%;
}
body{
width: 100%;
height:100%;
}
h1{
width:100%;
height: 20%;
display: block;
text-align: center;
font-family: serif;
font-size: 20px;
font-weight: normal;
margin: 100px 20px 20px 20px;
padding: 5px;
}
.bold{
display: block;
font-weight: bold;
font-size: 40px;
}
li {
float: left;
}

a {
display: block-inline;
padding: 8px;
background-color: #dddddd;
}
#navbar{
position: fixed;
top: 0;
width: 100%;
height: 20%;
}
.head{
display: block;
text-align: center;
position: relative;
width: 100%;
margin: 10vw 20vw 5vw;
padding: 5px 5px 5px  5px;
font-size: 17px;
}
hr{
margin: -13px auto 10px auto;
}
.text{
text-align: center;
}
#contact{
position: relative;
bottom: 10px;
width: 100%;
height: 20%;
}

  **Your browser information:**

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.2 Safari/605.1.15

Challenge: Personal Portfolio Webpage - Build a Personal Portfolio Webpage

Link to the challenge:

the task is:

The projects section should contain at least one element with a class of project-tile to hold a project

it is not for title of some kind