RFR: 6245410: javax.swing.text.html.CSS.Attribute: BACKGROUND_POSITION is not w3c spec compliant

[Abhishek Kumar]

On Tue, 21 Mar 2023 08:31:29 GMT, Prasanta Sadhukhan <psadhukhan at openjdk.org> wrote:

> [CSS spec for background-position](https://www.w3.org/TR/CSS22/colors.html#propdef-background-position)
> mention the initial value should be "0% 0%" but JDK has the value as "null".
> Rectified the spec violation. 
> No regression is seen in client tests..

src/java.desktop/share/classes/javax/swing/text/html/CSS.java line 1:

> 1: /*

Please update the copyright year.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/13114#discussion_r1143815337