thank you @Niyas Raphy for reply and guidance. will check this.

regards

as per my understanding the code is referring / inheriting the file website_sale/views/templates.xml OR i its not?

in file above, the 'class' product_price is exist but with some differences

ver 15:

<template id="product_price">
<div itemprop="offers" itemscope="itemscope" itemtype="http://schema.org/Offer" class="product_price d-inline-block mt-2 mb-3">
<h3 class="css_editable_mode_hidden">

ver 16:

<template id="product_price">
<div itemprop="offers" itemscope="itemscope" itemtype="http://schema.org/Offer" class="product_price mt-2 mb-3 {{'d-none' if combination_info['prevent_zero_price_sale'] else 'd-inline-block'}}">
<h3 class="css_editable_mode_hidden">

both contains the class "product_price" in <div

regards