[Gelöst] Width of submenu unde rflg of languge switcher

Background of the issue:
I want the language switcher (of the dropdown submenu flag) in the menu to be as wide as the flag. I tried adding custom CSS as described in example 5 on https://wpml.org/documentation/getting-started-guide/language-setup/language-switcher-options/how-to-fix-styling-and-css-issues-for-the-language-switchers/, but it does not work.

Symptoms:
The dropdown of the second language is wide, as if there were text right from the flag.

Questions:
Can you help me make the language switcher in the menu as wide as the flag?