Slider and light box


Is there any way to make the slider arrow become greyed out whenever it hits the last or the first page?

My second question is about the sample works section. Is there a way to create a custom lightbox? I’ve tried using CMS image and iframe, but the main problem is I can’t animate the arrow because it’s on the template page. Whenever the arrow is pressed, it changes the page entirely.

I tried using the Webflow lightbox, but I can’t customize the arrow and animate them. Here’s the goal that I’m looking for:

Any help would be appreciated! Thank you!

Here is my site Read-Only: LINK