<!DOCTYPE html>
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  <head>
    <meta charset="UTF-8">
    <title>trending topics</title>
    <link rel="stylesheet" href="style.css">
    <script src="script.js"></script>
  </head>
  <body>
    <div class="section">
      <div id="hamburger-icon"><div></div></div>
      <div id="title">trending topics.</div>
      <a href="#trend-frequency-data" id="arrow-transition"></a>
    </div>
    <div class="section">
      <div id="trend-frequency-data">
        <div>Covid-19 Symptoms: 100,000</div>
        <div>Mitch McConnell: 100,000</div>
        <div>Hand Sanitizer: 50,000</div>
        <div>Minecraft Nether Update: 50,000</div> 
      </div>
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</html>

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>trending topics</title>
    <link rel="stylesheet" href="style.css">
    <script src="script.js"></script>
  </head>
  <body>
    <div class="section">
      <div id="hamburger-icon"><div></div></div>
      <div id="title">trending topics.</div>
      <a href="#trend-frequency-data" id="arrow-transition"></a>
    </div>
    <div class="section">
      <div id="trend-frequency-data">
        <div>Covid-19 Symptoms: 100,000</div>
        <div>Mitch McConnell: 100,000</div>
        <div>Hand Sanitizer: 50,000</div>
        <div>Minecraft Nether Update: 50,000</div> 
      </div>
    </div>
  </body>
</html>

Delete extra closing div tag
Delete extra closing div tag
