Bootstrap and HTML are easier

Question

i was just coding on Freecodecamp and found it extremely awesome thing
before that i never knew anything about "bootstrap" and other things such as libraries
and now i just built an app with responsive design, used libraries(by assigning classes) to elements, i also used CSS and enjoyed mostly. here is thing i learned from all these

classes you can assign by your own with any word but there are already so many of them available to perform some predefined actions in both css and bootstrap in their libraries for example i used the icon of thumb for like button on my app all i did is just wrote this
<i class="fa fa-thumbs-up></i>
although that's the other thing that i am still wondering why i wrote "fa" word
lol

its a great thing they these guyz are doing for community at freecodecamp
highly appreciated and recommended to all my friends

Answer 1

Thank for sharing this information, and I would like to add that once you register on Free Code Camp, you can the FCC badge by linking that account here.