The integrations page had css in both `landing-page.scss` and
`portico.scss`. With this commit, the styles are mostly unified into
a single separate file.
Change the display from `block` to `flex` in order to be able to
arrange the elements as wanted. Reset the css of the header elements
only for the description view. Add `font-size: 1.2em` because the font
doesn't need resizing in this case, it needs resizing only when the
title is in the box.
Removed the `padding-bottom` from the `nav` on mobile because it
overlaps the new header and you cannot click the back button from the
integrations.
Fixes: #12365.
This moves all the stylesheets like stats, billing etc. to another
directory called `static/styles/portico/`, matching the directory
structure of our JavaScript.
Rishi Gupta
Aman Agrawal
Alexandra Ciobica
Vaibhav