Issue with submission form - php

Question

I have created a PHP form and i want to add Data on my SQL
Please check my Code where is the Issue whay not working my Code
I want to add all this field on my PHPadmin
but when i enter details and click on Make a payment its not working
i also add form action="insert.php"
Here is Code
<div class="agileits_main_grid_right">
<div class="wthree_payment_grid">
<h2>Seleccione Método de pago</h2>
<div id="horizontalTab">
<ul class="resp-tabs-list">
<li><img src="images/1.jpg" alt=" " /></li>
<li><img src="images/2.jpg" alt=" " /></li>
</ul>
<div class="resp-tabs-container">
<div class="agileits_w3layouts_tab1">
<form action="insert.php" method="post" class="creditly-card-form agileinfo_form">
<section class="creditly-wrapper wthree, w3_agileits_wrapper">
<div class="credit-card-wrapper">
<div class="first-row form-group">
<div class="controls">
<label class="control-label">Name on Card</label>
<input class="billing-address-name form-control" type="text" name="name" placeholder="John Smith">
</div>
<div class="w3_agileits_card_number_grids">
<div class="w3_agileits_card_number_grid_left">
<div class="controls">
<label class="control-label">Card Number</label>
<input class="number credit-card-number form-control" type="text" name="number"
inputmode="numeric" autocomplete="cc-number" autocompletetype="cc-number" x-autocompletetype="cc-number"
placeholder="•••• •••• •••• ••••">
</div>
</div>
<div class="w3_agileits_card_number_grid_right">
<div class="controls">
<label class="control-label">CVV</label>
<input class="security-code form-control"·
inputmode="numeric"
type="text" name="security-code"
placeholder="•••">
</div>
</div>
<div class="clear"> </div>
</div>
<div class="controls">
<label class="control-label">Expiration Date</label>
<input class="expiration-month-and-year form-control" type="text" name="expiration-month-and-year" placeholder="MM / YY">
</div>
</div>
<button class="submit"><span>Make a payment <i class="fa fa-long-arrow-right" aria-hidden="true"></i></span></button>
</div>
</section>
</form>
</div>