Add a generated HTML page without overriding styling

[maddin1991]

I have several auto-generated HTML files which I want to embed in my wiki. The pages were generated from api-specifications like asyncapi and openapi using different tools. One tool I used is redocly/cli and another is asyncapi/cli which are both generating a html file. I want to add them by just adding the files to the GitLab Storage of my wiki which works fine except, that the css styling is overridden by wikijs. Do I have any option to avoid the styling beeing overridden by the wiki? Is there maybe another way to add a generated html page to the wiki? Reading the docs about the generators it doesnt look like they provide a way of configuring the outputted css despite my knowledge about css is very limits.
Can anyone help?