Borja, I got tired that we have to update this style all the time when UX wants to change the steps of FTU. Maybe we can handle this problem with javascript instead of css in `tutorial.js` like this: 
```javascript
document.getElementById('tutorial-progress-bar').style.width = 'calc(100% / ' + stepsLength[currentLayout] + ');' ;
```
What do you think ? :D?