I am doing work for a client on a site that was built with the BB Theme. When the theme is activated (child or parent theme) it breaks the custom CSS I have added for my slider thumb. This effects chrome, brave, edge etc. and the only browser it doesn’t cause issues on is Firefox.
I thought the same initially considering the blue is similar to their default color but I have blocked the URLs for bootstrap’s css/js and the issue persists so it’s looks like conflict with the theme itself.
I have submitted a contact form but not sure the client has an account as I think it was set up by the prior dev.