Django ImportExport: How to remove inline <ins> tag background color in import preview with Jazzmin admin?

I'm using Django with the Jazzmin admin theme and the django-import-export package to bulk import model data through the admin panel.

When importing, the import preview page highlights newly added rows or changed fields using an inline tag like this: <ins style="background:#e6ffe6;">Paris</ins>

This creates an unwanted green/purple background that conflicts with my custom admin styling.

**What I've tried so far:**  

Created custom_admin.css at:   project/static/admin/css/custom_admin.css 
Linked it correctly in admin.py: class Media:  css = {  "all": ("admin/css/custom_admin.css",)  }  js = ("admin/js/custom_tabs.js",) 
Added the following aggressive CSS rule: .import-preview td ins, tr.row-new td ins, .import-preview td > ins {  all: unset !important;  background-color: #fff !important;  color: #000 !important;  display: block !important;  text-decoration: none !important;  width: 100% !important; } 
Ran collectstatic and did a full cache refresh (Ctrl+Shift+R)
Verified that custom_admin.css is loaded correctly via DevTools - Still, the inline style style="background:#e6ffe6" overrides everything.

What I also attempted:

Overriding the template import_preview.html   (placed at project/templates/import_export/import_preview.html) with a custom version that removes the <ins> tag completely and wraps cells in <div> instead. But the default template still seems to load or my override isn’t being used.

My setup:

Django 5.1.1.
django-import-export 3.3.5.
Jazzmin admin theme.
Static and template settings are configured properly.

Question: How can I reliably remove or override the inline <ins style="background:#e6ffe6;"> rendering in the import preview page of django-import-export, when using Jazzmin?

I’m fine with either:

Overriding the template correctly.

Forcibly killing the inline background style with CSS.

Any working example or tested solution would be highly appreciated. SCREENSHOT