Horizontal Language-Switcher

I know this question has been asked lots of times before. Still – I couldn’t find anything suitable so as to display the simple (list-based) language-switcher horizontally under Drupal 8. Has anybody solved this issue? And if so – how…? 
I have managed to remove the bullets already. Actually, I just want to also just show the language icons and not the language-text…
Regards from Austria
H. Stoellinger

Drupal version: 

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