Extent of CSS3 support in JavaFX
<p>What is the extent of CSS3 support in JavaFX? According to documentation</p>

<blockquote>
  <p>JavaFX Cascading Style Sheets (CSS) is based on the W3C CSS version 2.1 [1] with some additions from current work on version 3 [2]</p>
</blockquote>

<p><a href="https://docs.oracle.com/javase/8/javafx/api/javafx/scene/doc-files/cssref.html#introscenegraph" rel="nofollow noreferrer">https://docs.oracle.com/javase/8/javafx/api/javafx/scene/doc-files/cssref.html#introscenegraph</a>
Cannot find anything specific here.</p>

<p>1) However how much percentage of CSS3 is supported in JavaFX?</p>

<p>The CSS3 specification must have come along way since this was first mentioned in the JavaFX CSS specifiaction.</p>

<p>2) What from CSS3 is supported?</p>

<p>There is only one mention of CSS3 in the JavaFX CSS specification.</p>

<p>3) Is it possible to use SASS with JavaFX CSS?</p>

<p>4) What changes does Java 9 have in regards of CSS support?</p>