css matter

Refresh the browser with CTRL+F5. Links are shown with a dotted line; this is by design in the latter versions.

If you want to have links not being underlined add this to your custom-style.css and refresh browser:

a, a.link {
  border-bottom: none;
}

thanks but it's not a matter of cache. I even clear drupal cache to be sure.

there is something wrong somewhere.

you may check this https://hisseyorumlari.com/

why links here are underlined?

Sorry, it was my mistake; D7 version has the links solid underlined and D10 dotted underlined. If you are unhappy with this, you can change that in custom-style.css as per my instruction:

a, a.link {
  border-bottom: none;  ...or
  border-bottom: 1 px dotted #535353;
}

https://x.muratkavak.com/garan-garanti-bankasi

this is also drupal 7 and link is not underlined.

anyway I'm happy with 4.11. thanks.