Fylo data storage with Flexbox, position and SASS

Please i need your help, in this challenge i think there are better ways to do and i'm not sure that's ok.

For example:

1. To align the point at the end in bar progress i used (text-align: -webkit-right)

2. The containers are fixed (static units)

3. The text space left use position to put in the end of the container, the text of GB left, use position to put at the end of the container i want to that text resize with the progress bar and with of container, but i dont get it, i don't know if that requies javascript or only i don't know it.

All other feedback is welcome! have a nice day! <3