Mauricevdh

I modified your lines into these one:

a.pis-title-link {
font-size: 140%;
font-weight: bold;
}

Your suggestion didn’t work properly (nothing happened).
This one is working, however, maybe you can check it out for me?

Of course, no problem.

The URL is https://www.mauricevandenheuvel.com

I don’t have tried your suggestions.

The website is live and pretty busy at the moment. So I don’t want to mess up the looks at the moment. Thereby comes the problem that sometimes it’s working all fine, so I should try it for several days and that’s not what I want at the moment (never actually).

I hope then it will improve when there is a new release of WP, but with the last update the problem didn’t solve.