tabs and title overlap

Hello friends, I’ve been trying to find a solution for more than a week and I can’t find it on my page, I put two tabs CARTELERA Y CALENDARIO each with information and the titles of these tabs are not complete, and I want the first tab when the page loads exit at once active that is to say that it shows me at once. I see that this was not created through a pluggins. I have seen all your forum and I can’t find a specific solution to this particular problem, if you could help me with this. Thank you.

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