Simple component using html, css and Javascript.

1 - The most difficult part of this project for me was created functions with Javascript that was be able to manipulate the DOM to add or remove the specific classes.

2 - I'm not sure about Mobile styles, I added media queries in the same main sheet of styles design for desktop. I think there is a better way to do it.

3 - Well I'd like that someone with more experience to look at my code and be able to recommend better practices.