Javascript » Web API
👉 User Story:
As a user
When clicking on a button
Then the button should become green
You can try things out directly on this pen:
https://codepen.io/marcopeg/pen/JjPBgpw
NOTE: In this exercise you need to play with HTML, CSS and Javascript!
✅ Proposed Solution:
Don't run this unless you gave a very good effort to solve it yourself!