custom CSS not working

Hi there, thanks for the plugin it’s great!

My only problem so far is that I wanted to flex a tab so I had to modify the plugin’s css in order to flex the whole element, then flex-wrap it and set width for the other elements and it’s working fine.

the problem is that the display for the tab itself is set by the bootstrap-front.css, and I modified it as well to make it flex, I saved it, and it’s still not working, when I inspect the code front-end my changes are not here. I just have this problem with the bootstrap bit, is it normal and how shall I change it?