typo 'plain'->'better'?

I'm not sure, but it would make sense if 'plain' is replaced with 'better'.
As it is, I am wondering if listing properties in the 'attributes' attribute results in them being automatically created, but I am left wondering what 'plain' is all about.
Update styling.md

Define acronyms the first time they are used.
Merge pull request #561 from jbdeboer/patch-1

Update styling.md
extra (wrong) quote in name-tag example

The name tag example has a quote (") too many,
which makes the example HTML invalid
Merge pull request #555 from davidmaxwaterman/patch-2

typo 'plain'->'better'?
Merge pull request #563 from frunjik/patch-1

extra (wrong) quote in name-tag example
Corrections for Monostate pattern in #565
Fixes #568
Updated to address comments.
Merge branch 'master' of https://github.com/Polymer/docs into docs-460