timeline on mobil not responsiv?

why the timeline page is on my mobil not responsive how can I change this? I tried to edit the css class <h3 class=“hidden-xs hidden-sm“ style=“ but it is not working.

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Hello,

I saw the screenshot you attached.

Please provide the URL of the page where you added the timeline to check it myself and help you out accordingly.

Regards.
Xtemos Studios

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