where is in journal3 (template for opencart) iframe? And how can I changing it?

Question

I was look for .twig file or section in admin panel but didnt find nothing. I want to change layout in this iframe. OpenCart version 3 on the twig. Thiss button for call iframe:

<a class="btn btn-cart" 
data-toggle="tooltip" 
data-tooltip-class="module-products-27 
module-products-grid cart-tooltip"
data-placement="top"
onclick="cart.add('360', $(this).closest('.product-thumb').find('.button-group 
 input[name=\'quantity\']').val());" 
data-loading-text="<span class='btn-text'>Buy</span>" 
data-original-title="Buy"><span class="btn-text">Buy</span>
</a>

Answer 1

If you whant replace text, icon and style:

Cart button text you will find in language file catalog/language/en-gb/en-gb.php, line

$_['button_cart']           = 'Add to Cart';

PRODUCT PAGE

Icon and setting of this button you will find in

Journal > Styles > Product Page > DEFAULT

On this setting page find Buttons > Add to Cart

PRODUCT GRID

Icon and setting of this button you will find in

Journal > Styles > Product Grid > DEFAULT

On this setting page find Buttons Group > Add to Cart