Feature request: optionally make tl-timenav transparent

I tried to get it with internal css

.tl-timenav { background-color: transparent; background: rgba(242, 242, 242, 0.5); }

I did lose the gray, but still couldn't see through. (rgba had no effect.)

My collaborator / content creator expressed some concern about constraints on how much copy could fit on a slide.

I was thinking perhaps with some text faintly visible through the timeline it would suggest to the viewer that they can scroll down. I think having the time line at the bottom is better than at the top.

One more option possibility would be to be able to choose if media could float above the copy when the responsive display is squeezed, as on a phone.

Also, when the slide is rendered on a narrow screen the credit below the media disappears.

Start by reproducing the timeline on a narrow screen and inspect the .tl-timenav styling and responsive rendering. Clarify which requested behavior is in scope: transparent timeline background, media placement above copy, or preserving media credits. Done should include an agreed mobile layout and verification that the selected behavior works without losing the credit below media.