garbage on #discussion_r11698175

This line was not neccessary, but the class is a refactor that i’m
adding for the form. Doesn’t make sense to add another div on the form
just because of the size of the button. This way we have a pattern for
submit buttons.
refactor on files#r11698287

Since this is a set of elements on the same context I thought that
change the tags was the best way. Already refactored.
separating content to class files#r11698433

The how-it-works texts have to be like cause we don’t know how the
channel text will be. I have to use the tag. But for our new project
page I separated it to a new class.
using mixin on border-box files#r11698668

Perfect remembered!
font-sizes on tags files#r11698809

I’m moving this discussion to the design team this pattern. Today we
only have docummented on link color with one font-size. This have to be
better arranged and them the code created.
changing rewards to be divs files#r11698950
removing duplicated code 645#discussion_r11701548

Some trash that I left!
removing style from html 645#discussion_r11702746