Tab indicator isn't shown + Laggy indicator

[rbozan]

Tab indicator isn't shown until you resize your window.

Also, because this is a framework also for mobile, I'd suggest you to use transform:translateX(..px) + a width instead of left + right, as this animation you are currently using with left + right is slow. instead, use transform, it's way smoother on mobile.

[Dogfalo]

This is a good idea to handle performance issues. I'll look into incorporating this.

[Dogfalo]

We've incorporated translate for other components, but tabs animation does not allow for this.