Slider Slides 2 & 3 Content not showing on Preview

Hello everyone,
I created this Slider by making Slide 1 that’s working properly, then copied and modifies the content for Slides 2 & 3. However, Slides 2 & 3 are showing on Editor, but not on Preview. I’d really appreciate your help, as this is my second client project and I cannot find what’s wrong!

Thank you in advance,
Maria