Issue with responsive slider

Merry christmas everyone,

I have 2 issues with the plugin call Post Highlight.
http://wordpress.org/plugins/post-highlights/
So maybe someone can help me, or if anyone know a plugin who do the same : you can select any post, custom post or page you want to display it as a slideshow..

1/ I’d like the slide to be responsive? Is there anyway to do it?
I tried some code php, css, js.. but nothing work..

2/ I have a post_type call “portfolio” is there any way to dynamicaly get the last 3 portfolio thumbs as slides?

Thank you very much for answering.