first create your codepen account, fork this pen (the fork button is in the bottom right corner)
and then start writing your code
the first user story is
User Story #1: My tribute page should have an element with a corresponding id="main" , which contains all other elements.
what element could you write? do you know how to give an id to an element?
then after you write that, look at next user story, and go on till you have completed them all
after that you can add some more stuff to make it look nicer