add a numeric serial number

It is highly recommended to add a numeric serial number, Please refer to this plugin for details https://chrome.google.com/webstore/detail/chromekey/oflcjbbjelnpckgkiohohbjmgikaknac

Done.

@wOxxOm said: Done. Good and fast!

But there is still a shortcoming, please see the picture:

The effect below is much better.

So it is recommended to add ) brackets after the number.

You want a ) ? I don't. ~I can add : though~. Nope, I don't like : either, it's visually fussy.

@wOxxOm said: You want a ) ? I don't. I can add : though. ) Will it look better ?

No, I won't be adding anything.

You can customize the appearance in Stylus extension or a similar one yourself:

#rso > div > :not([data-ved]) a h3::before {
  content: counter(digitnav) ")";
  font-weight: bold;
}

Otherwise, add a decoration to make the numbers darker.e.g. {color:#777} or {opacity:.5}

You add it, I won't be changing anything.

@wOxxOm said: You can customize the appearance in Stylus extension or a similar one yourself:

#rso > div > :not([data-ved]) a h3::before {
  content: counter(digitnav) ")";
  font-weight: bold;
}

Thank you very much!