<form class="order-form" method="post" action="<?=get_template_directory_uri()?>/mail.php">
<div class="row clear">
<div class="col-md-6 col-sm-6">
<div class="order-form-item">
<input type="text" name="contname" placeholder="">
</div>
</div>
<div class="col-md-6 col-sm-6">
<div class="order-form-item">
<span class="phone-code">+994</span><input type="text" name="contphone" placeholder="">
<input type="hidden" name="product" value="Заказ звонка">
</div>
</div>
<div class="col-md-12 col-sm-12 colxs-12">
<div class="order-form-item">
<div class="btn-wrapp">
<input type="submit" name="contact" class="btn" value="Заказать">
</div>
</div>
</div>
</div>
</form>