[css-lists-3] Clarify which properties apply to ::marker vs contents of ::marker. #4568

Author: fantasai

css-lists-3/Overview.bs

@@ -207,23 +207,41 @@ The ''::marker'' Pseudo-Element</h3>
 <h4 id='marker-properties'>
 Properties Applying to ''::marker''</h4>
 
-  The following CSS properties (and only these properties)
-  apply to a ''::marker'' pseudo-element:
+  All properties can be set on a ''::marker'' pseudo-element
+  and will have a [=computed value=];
+  however,
+  only the following CSS properties
+  actually apply to a [=marker box=]:
 
   <ul>
-    <li>all font properties (see [[CSS-FONTS-3]] and its successors)
-    <li>the 'white-space' property (see [[CSS-TEXT-3]])
-    <li>the 'color' property (see [[CSS-COLOR-3]])
     <li>the 'text-combine-upright', 'unicode-bidi', and 'direction' properties (see [[CSS-WRITING-MODES-3]])
     <li>the 'content' property (see [[#content-property]], below)
     <li>all animation and transition properties (see [[CSS-ANIMATIONS-1]] and [[CSS-TRANSITIONS-1]])
   </ul>
 
   <p class="note">
     It is expected that future specifications will extend this list of properties;
-    however at the moment marker box layout is not fully defined,
+    however at the moment outside marker box layout is not fully defined,
     so only these properties are allowed.
 
+  Other properties must not have an effect on the [=marker box=]
+  when set in the [=author origin=] of the [=cascade=].
+  UAs may either treat such properties as not applying,
+  or enforce their value by setting a [=user-agent origin=] ''!important'' rule.
+  However, inheritable properties that apply to text
+  can be set on the ''::marker'' pseudo-element:
+  these will inherit to and take effect on its text contents.
+
+  <div class=example>
+    Examples of properties that apply to text,
+    and therefore to the contents of ''::marker'' when declared on ''::marker'':
+    <ul>
+      <li>'white-space', 'text-transform', 'letter-spacing' (see [[CSS-TEXT-3]])
+      <li>all font properties (see [[CSS-FONTS-3]] and its successors)
+      <li>the 'color' property (see [[CSS-COLOR-3]])
+    </ul>
+  </div>
+
   UAs must add the following rule to their default style sheet:
   <pre>
     ::marker, ::before::marker, ::after::marker {
@@ -1544,6 +1562,16 @@ Acknowledgments</h2>
 
 This section documents the changes since previous publications.
 
+<h3 id="changes-20200709">Changes since the 9 July 2020 WD</h3>
+
+	<ul>
+		<li>Clarified properties that apply to ''::marker'' boxes
+		vs. to the contents of ''::marker'' boxes.
+		(<a href="https://github.com/w3c/csswg-drafts/issues/4568">Issue 4568</a>)
+		<li>Added ''text-transform: none'' to the UA default style sheet for ''::marker''.
+		(<a href="https://github.com/w3c/csswg-drafts/issues/4206">Issue 4206</a>)
+	</ul>
+
 <h3 id="changes-20190817">Changes since the 17 August 2019 WD</h3>
 
 	<ul>