[csswg-drafts] [css-ui-4] Clarify that 'appearance: none' causes an element to not be replaced anymore

SebastianZ has just created a new issue for 
https://github.com/w3c/csswg-drafts:

== [css-ui-4] Clarify that 'appearance: none' causes an element to not
 be replaced anymore ==
The [description of the `none` 
value](https://drafts.csswg.org/css-ui-4/#valdef-appearance-none) of 
the `appearance` property currently says this:

> The element is rendered following the usual rules of CSS. Replaced 
elements other than form controls are not affected by this, and remain
 replaced elements. Form controls are _not_ made to look like native 
controls of the host operating system. See below for details.

It doesn't explicitly state that it turns form controls into 
non-replaced elements.

Sebastian

Please view or discuss this issue at 
https://github.com/w3c/csswg-drafts/issues/1018 using your GitHub 
account