Font for entry-title not according to CSS

Hi, although the font-size and font-weight for all entry-titles is set via CSS, on one page (http://new.yogaraum-hamburg.de/kursplan-2/) of the website the font size and weight of the entry-title is bigger than the ones of all the other pages. I can't explain why. The only difference is that I use a different template on that page. How can I change it to be the same font-size and font weight as all others? Thank you so much for helping!