RFR: JDK-8180426 Use standard css file for new docs bundle index.html page

[Mandy Chung]

> On May 17, 2017, at 6:44 AM, Magnus Ihse Bursie <magnus.ihse.bursie at oracle.com> wrote:
> 
> On 2017-05-17 13:27, Erik Joelsson wrote:
>> I realize the dilemma. The clean solution is to define yet another top level target for just this file. It's also possible that this race will never cause problems, I don't know for sure.
> 
> Here's an updated version:
> http://cr.openjdk.java.net/~ihse/JDK-8180426-use-css-for-bundle-index-page/webrev.02

Looks good.

Mandy