Bigcommerce Theme Simple Modifications

General information for the website: Bigcommerce Stencil Theme
Kind of development: Customization of existing website
Description of requirements/features: General information for the website: Bigcommerce Site

Description of requirements/features: Are you Bigcommerce (Stencil) expert?
If you are right, It is very simple code fix in stencil theme.
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Site Url: https://www.wdstrings.com

1, For products with variations/options, the stock number shows. Instead of the
stock number, it should say “In Stock” or out of “Out of Stock”. At the moment,
it is only correct for NON-variation products.
https://www.screencast.com/t/lns1yOyutW

2, When a product with options/variations is selected, the SKU should appear
[and only the code after the * should show].
https://www.screencast.com/t/V8KBI3CI

3, Relating to the Frequently Asked Questions page, we need to make this page
responsive, so that mobile browsers can see the text:
https://www.screencast.com/t/QSQ1E21CgAkc
https://www.wdstrings.com/frequently-asked-questions/

4, The search results do not have the price change, like the rest of the website.
Please apply the current code to the search results:
It is have to change
https://www.screencast.com/t/uWKkgGqXp and
https://www.screencast.com/t/5E2sZyAZT46W and
https://www.screencast.com/t/GaUnzkairCu