You should place the submit button within the form element. why am i getting this error here is my code
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="description" content="freeCodeCamp Accessibility Quiz practice project" />
<title>Accessibility Quiz</title>
<link rel="stylesheet" href="styles.css" />
</head>
<body>
<header>
<img id="logo" src="https://cdn.freecodecamp.org/platform/universal/fcc_primary.svg">
<h1>HTML/CSS Quiz</h1>
<nav>
<ul>
<li><a href="#student-info">INFO</a></li>
<li><a href="#html-questions">HTML</a></li>
<li><a href="#css-questions">CSS</a></li>
</ul>
</nav>
</header>
<main>
<form method="post" action="https://freecodecamp.org/practice-project/accessibility-quiz">
<section role="region" aria-labelledby="student-info">
<h2 id="student-info">Student Info</h2>
<div class="info">
<label for="student-name">Name:</label>
<input type="text" name="student-name" id="student-name" />
</div>
<div class="info">
<label for="student-email">Email:</label>
<input type="email" name="student-email" id="student-email" />
</div>
<div class="info">
<label for="birth-date">D.O.B.<span class="sr-only">(Date of Birth)</span></label>
<input type="date" name="birth-date" id="birth-date" />
</div>
</section>
<section role="region" aria-labelledby="html-questions">
<h2 id="html-questions">HTML</h2>
<div class="question-block">
<p>1</p>
<fieldset class="question" name="html-question-one">
<legend>
The legend element represents a caption for the content of its
parent fieldset element
</legend>
<ul class="answers-list">
<li>
<label for="q1-a1">
<input type="radio" id="q1-a1" name="q1" value="true" />
True
</label>
</li>
<li>
<label for="q1-a2">
<input type="radio" id="q1-a2" name="q1" value="false" />
False
</label>
</li>
</ul>
</fieldset>
</div>
<div class="question-block">
<p>2</p>
<fieldset class="question" name="html-question-two">
<legend>
A label element nesting an input element is required to have a
for attribute with the same value as the input's id
</legend>
<ul class="answers-list">
<li>
<label for="q2-a1">
<input type="radio" id="q2-a1" name="q2" value="true" />
True
</label>
</li>
<li>
<label for="q2-a2">
<input type="radio" id="q2-a2" name="q2" value="false" />
False
</label>
</li>
</ul>
</fieldset>
</div>
</section>
<section role="region" aria-labelledby="css-questions">
<h2 id="css-questions">CSS</h2>
<div class="formrow">
<div class="question-block">
<label for="customer">Are you a frontend developer?</label>
</div>
<div class="answer">
<select name="customer" id="customer" required>
<option value="">Select an option</option>
<option value="yes">Yes</option>
<option value="no">No</option>
</select>
</div>
<div class="question-block">
<label for="css-textarea">Do you have any questions:</label>
</div>
<div class="answer">
<textarea id="css-textarea" name="css-questions" rows="5" cols="24" placeholder="Who is flexbox..."></textarea>
</div>
</div>
<div class="submit-button">
<button type="submit">Send</button>
</div>
</section>
</form>
</main>
</body>
</html>