link in html header always present

In the of all web pages I've checked so far there is always a line <link href="data:text/css,%5Bid*%3D'google_ads_iframe'%5D%2C%5Bid*%3D'taboola-'%5D%2C.taboolaHeight%2C.taboola-placeholder%2C%23credential_picker_container%2C%23credentials-picker-container%2C%23credential_picker_iframe%2C%5Bid*%3D'google-one-tap-iframe'%5D%2C%23google-one-tap-popup-container%2C.google-one-tap-modal-div%7Bdisplay%3Anone!important%3Bmin-height%3A0!important%3Bheight%3A0!important%3B%7D" rel="stylesheet" type="text/css">

Does anyone know what it means? I tried to open a page in edge, and I do not see it there.

I am running mozilla-flatpak, version 115 on Fedora