iOS user css stylesheets for Safari

On macOS and other desktop systems you can override the CSS from a website and add yor preferences -- change the header font, line spacing, text colour etc. Is there away to do this automatically per site on the iPad? There is a question https://apple.stackexchange.com/questions/377492/is-css-injection-possible-on-ipad-using-safariasking similar but this requires opening the page first then running a shortcut for each page. The desktop addins apply the styles by domain name so no extra user involvement.