Featured quote and 3 stats added

[aleyda]

No description provided.

[rviscomi]

Thanks @aleyda. Let's combine this with the open PR to edit the chapter: #1625.

I also wanted to give you some context how the stats will appear:

For example, on the home page, one of the Markup chapter's featured stats is 85.73% Percentage of pages that use the "living" HTML doctype. The number and the label are treated separately in the metadata as featured_stat_1 and featured_stat_label_1.

Could you take another turn at formatting the stats so that the number is separated from the label? That may also mean choosing between showing the mobile or desktop number. When you're done, please apply these changes to the PR as suggested edits:

[aleyda]

Thanks for the explanation @rviscomi ! I did the changes as requested here. I hope they're better now :) Thanks