i want to make carrousel with bootstrap but i have problem the pictures does not appear … I save the image in static / img / folder (here)… Can you help me 
Can you provide a link to a git repo and your site where it is not working? It’s easier for someone to help that way.
Its much better to see your code.
But you can look at the code in this theme.
Its Bootstrap with a slider
Hope this helps
Seeing your code would help us to help you 
However you may see here how I do this in my multilingual site (look also in the config.yml file)