Used SASS, Flexbox and Mobile First technique

Hello guys. This is my solution to that challenge. As additional techniques, I made the project using the Mobile First model and then I adjusted it with the media query. I used SASS and at the end of the project I added my fake signature. One of the difficulties I had was when creating the function that determines the current day and selects the bar of the same day's chart, but I managed to solve it by studying more about arrays. Please, any tips or improvements to the code and markings are always welcome. Hugs.