Enhancing Gallery 24 Component: Text on Images & Scroll Issues

Hi, I am using the "Gallery 24" component im my website. I was wondering if is it possible to do 2 things here:

1.
Can I add text on images in the gallery, like in my picture?
2.
When I scroll until the end of the gallery, there is some white background left after last image, is it possible to remove it and so the scroll ends with the last gallery picture?

Thanks,