HTML element translation

I have the following html:

has the name (html_258) and class name (C_call) used for styling in CSS. All other elements in the page are translated correctly bassed on i18n except this item. I added the following property:

And in translation files as follows:

and :

The result:

It is not translated, and the stylying applied via class C_call seems has been disabled.

Without translation, the original page (English) looks like this:

I deeply appreciate your help
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