Live Demo: Bootstrap Contact Form inside Modal

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<title>Bootstrap Contact Form inside Modal</title>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto|Varela+Round">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js"></script>
<style>
body {
    color: #566787;
    background: #f5f5f5;
    font-family: "Varela Round", sans-serif;
}
.form-control:focus {
    border-color: #8464ca;
    box-shadow: 0 0 8px #beace3;
}
.contact-modal {
    width: 600px;
    padding: 50px;
    margin: 30px auto;
}
.contact-modal h4 {
    font-size: 26px;
    display: inline-block;
}
.contact-modal .form-control, .contact-modal .btn  {
    min-height: 38px;
    border-radius: 1px;
    outline: none;
}
.contact-modal .btn-primary {
    min-width: 100px;
    background: #8464ca;
    border: none;
}
.contact-modal .btn-primary:hover {
    background: #6d45c0;
}
.contact-modal .btn-primary:focus {
    box-shadow: 0 0 8px rgba(132, 100, 202, 0.6);
}
.contact-modal .btn-link {
    color: #6d45c0;
}
.contact-modal label {
    opacity: 0.9;
    font-weight: normal;
    font-size: 95%;
}
.contact-modal textarea {
    resize: vertical;
}
.contact-modal.modal-dialog {
    width: 480px;
}
.contact-modal .modal-header {
    padding: 20px 35px 14px;
}
.contact-modal .modal-content {
    border-radius: 1px;
}
.contact-modal .close {
    position: absolute;
    right: 35px;
    top: 25px;
}
.contact-modal .modal-body {
    padding: 20px 35px 35px;
}
.hint-text {
    opacity: 0.8;
}
.trigger-btn {
    display: inline-block;
    margin: 100px auto;
}
</style>
</head>
<body>
<div class="text-center">
	
	<a href="#myModal" class="trigger-btn" data-toggle="modal">Click to Open Contact Modal</a>
</div>

<div id="myModal" class="modal fade">
	<div class="modal-dialog contact-modal">
		<div class="modal-content">
			<div class="modal-header">				
				<h4 class="modal-title">Contact Us</h4>
				<button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
			</div>
			<div class="modal-body">
                <form action="/examples/actions/confirmation.php" method="post">
                    <div class="form-group">
                        <label for="inputName">Name</label>
                        <input type="text" class="form-control" id="inputName" required>
                    </div>
                    <div class="form-group">
                        <label for="inputEmail">Email</label>
                        <input type="email" class="form-control" id="inputEmail" required>
                    </div>
                    <div class="form-group">
                        <label for="inputMessage">Message</label>
                        <textarea class="form-control" id="inputMessage" rows="4" required></textarea>
                    </div>
                    <input type="submit" class="btn btn-primary" value="Send">
                    <input type="button" class="btn btn-link" data-dismiss="modal" value="Cancel">
                </form>
			</div>
		</div>
	</div>
</div>
</body>
</html>