notranslate on post title bar

Hello,
Love your theme and experimenting with it in a new project.
I need to add a class=notranslate to the title of each post, the top horizontal bar beneath the main horizontal menu. See the link https://siteweb87.nl/enterprises/assist-virtual-support-solutions/
If you change the language trough the link in the menu, the post title is translated and i used the title as a company name and that should not be tranlated.
I which file can i add the notranslate class?
Thank you!
Wil

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