Honestly speaking, this request is considered custom code and is therefor out of the scope of the Toolset support. https://wpml.org/purchase/support-policy/
I consider it custom code because it is not related to Toolset API. It is rather related to custom CSS code that will style the output of a Toolset view, beyond what Toolset offers.
- https://toolset.com/documentation/programmer-reference/
For example, Toolset Blocks allows to generate an image block, and offers a wide range of styling options(scale on hover as an example). However, the overlay part that contains the icon is not offered by Toolset. Maybe a compatible blocks plugin offers such feature.
- https://toolset.com/documentation/dynamic-sources-in-popular-blocks/
If you inspect the7 theme posts grid HTML, you will notice that the on-hover overlay and icon are generated by a specific part. Maybe this image explains it better hidden link
Toolset blocks(Image block as an example) generate different HTML, and will not generate the overlay-and-icon part, unless you create them(maybe a container block, and an icon block inside of it), and style them(Custom CSS) separately. Toolset blocks does not give full control of the generated HTML.
To fully control the generated HTML, you will need to use a Classic HTML block, or a Fields&Text block, and shortcodes. Or by creating the content template with the legacy editor.
If you want to use the same HTML markup from the7 theme, you can do something like:
<div class="post-thumbnail-wrap rollover-active this-ready">
<div class="post-thumbnail">
<a href="[wpv-post-url]" class="post-thumbnail-rollover" aria-label="Post image">
[wpv-post-featured-image size='custom' width='300' height='200']
or [types field="the-image-field"][/types]
</a>
<div class="project-links-container">
<a href="[wpv-post-url]" class="project-details" aria-label="Details link">
<span aria-hidden="true" class=" icomoon-the7-font-the7-zoom-02"></span>
</a>
</div>
</div>
</div>
Then you can copy the CSS parts that styles the CSS class "project-links-container", the icon, the scale transition, etc.
I hope this makes sense. However, we do help our clients with simple custom code solutions when possible and not against the time of other clients.
Let me know if you got stuck, and I'll do my best to help.