Slider responsiveness issue

Hi,

Nirvana has been working great for me on desktop. But people complained about the slider on mobile and I was able to verify that indeed, both on chrome and safari the slides start out fine and after the first transition the first slide seems to take up the entire section (instead of leaving space for the title and button) and after the next transition it just breaks down. This has never happened on desktop, even if I shrink the window to force responsiveness.

Website: www.coisasimpossiveis.com