[css-backgrounds-3] Define properties with animation type (w3c#8417)

Co-authored-by: Tab Atkins Jr <jackalmage@gmail.com>

Author: cdoublev

css-backgrounds-3/Overview.bs

@@ -104,18 +104,6 @@ Value Definitions</h3>
   also accept the <a>CSS-wide keywords</a> as their property value.
   For readability they have not been repeated explicitly.
 
-<h3 id=animations>Animated Values</h3>
-
-<p><!-- <a href="http://www.w3.org/Style/CSS/Tracker/issues/210">ISSUE-210.]</a> -->
-It is expected that CSS will include ways to
-animate transitions between styles. (The
-section <a href="https://www.w3.org/TR/css-transitions-1/#animatable-types">“Animation of property types”</a>
-of the <cite>CSS Transitions
-module</cite> [[CSS3-TRANSITIONS]] is expected to define how different
-kinds of values are interpolated during a transition.) In anticipation
-of that, this module includes a line “Animatable” for each property,
-which specifies whether and how values of the property can be animated.
-
 <h2 id="backgrounds">
 Backgrounds</h2>
 
@@ -1221,7 +1209,7 @@ Applies to: all elements except [=ruby base containers=] and [=ruby annotation c
 Inherited: no
 Percentages: N/A
 Computed value: see individual properties
-Animatable: see individual properties
+Animation Type: see individual properties
 </pre>
 
 <p>These properties set the foreground color of the border specified
@@ -1383,7 +1371,7 @@ Applies to: all elements except [=ruby base containers=] and [=ruby annotation c
 Inherited: no
 Percentages: N/A
 Computed value: absolute length, [=snapped as a border width=]; zero if the border style is ''border-style/none'' or ''hidden''
-Animatable: by computed value
+Animation Type: by computed value
 </pre>
 
 <pre class="propdef">
@@ -1394,7 +1382,7 @@ Applies to: all elements except [=ruby base containers=] and [=ruby annotation c
 Inherited: no
 Percentages: see individual properties
 Computed value: see individual properties
-Animatable: see individual properties
+Animation Type: see individual properties
 </pre>
 
 <p>These properties set the thickness of the border.
@@ -1436,7 +1424,7 @@ Applies to: all elements except [=ruby base containers=] and [=ruby annotation c
 Inherited: no
 Percentages: N/A
 Computed value: see individual properties
-Animatable: see individual properties
+Animation Type: see individual properties
 </pre>
 
 <p>This is a shorthand property for setting the width, style, and
@@ -1451,7 +1439,7 @@ Applies to: all elements except [=ruby base containers=] and [=ruby annotation c
 Inherited: no
 Percentages: N/A
 Computed value: see individual properties
-Animatable: see individual properties
+Animation Type: see individual properties
 </pre>
 
 <p>The 'border' property is a shorthand property for setting the same width,
@@ -1526,7 +1514,7 @@ Applies to: all elements (but see prose)
 Inherited: no
 Percentages: Refer to corresponding dimension of the <a>border box</a>.
 Computed value: pair of computed <<length-percentage>> values
-Animatable: by computed value
+Animation Type: by computed value
 </pre>
 
 <pre class=propdef>
@@ -1537,7 +1525,7 @@ Applies to: all elements (but see prose)
 Inherited: no
 Percentages: Refer to corresponding dimension of the <a>border box</a>.
 Computed value: see individual properties
-Animatable: see individual properties
+Animation Type: see individual properties
 </pre>
 
 <p>The two <<length-percentage>> values of the 'border-*-radius'
@@ -2226,7 +2214,7 @@ Applies to: See individual properties
 Inherited: no
 Percentages: N/A
 Computed value: See individual properties
-Animatable: See individual properties
+Animation Type: See individual properties
 </pre>
 
 <p>This is a shorthand property for setting 'border-image-source',
@@ -2711,7 +2699,7 @@ Changes since the 24 July 2012 Candidate Recommendation</h3>
   <li>Clarified how ''background-attachment: local'' is affected by scrolling.
   <li>Simplified computed value of 'background-position'
     to clarify that all 'background-position' values are interpolable.
-  <li>Added “Animatable” values to each property definition table.
+  <li>Added “Animation Type” values to each property definition table.
 </ul>
 
 <h3 id="changes-2012-04">
@@ -2841,7 +2829,7 @@ Candidate Recommendation</a>:
     definition of keywords.
   <li><a href="#animations">Section 2.3</a> (and all property definitions):
     Added a section about expected an expected animations module.
-    Added "Animatable" line to property definition tables.
+    Added "Animation Type" line to property definition tables.
   <li><a href="#the-background-position">Section 3.6</a>:
     Renamed &lt;bg-position&gt; production to <i>&lt;position&gt;</i> for
     easier re-use in other specifications and recast the grammar to be more