[css-round-display] Make position polar apply to the element rather than the parent (ACTION-711: https://www.w3.org/Style/CSS/Tracker/actions/711)

Author: anawhj

css-round-display/Overview.bs

@@ -279,7 +279,7 @@ Elements could be often placed along a circle or concentric circles, and the pol
 Note: In the polar coordinate system, a point is described as being a certain distance from the pole and a certain angle from the polar axis. In the mathematical theory, the polar axis is commonly defined as the positive direction of the x-axis, but we consider the polar axis as the positive direction of the y-axis position as other CSS specifications usually do.
 </p>
 <h3 id="position-property">The 'position' property</h3>
-When the 'position' property on an element is set to '<code>polar</code>', its children use the polar coordinates.
+When the 'position' property on an element is set to '<code>polar</code>', the element could be affected in polar coordinate system.
 <pre class='propdef'>
     Name: position
     Applies to: all elements
@@ -315,11 +315,11 @@ The 'polar-distance' property specifies the distance from the center of the pare
 
 <div class='example'>
 This example shows a way to align elements within the polar coordinates system.
-<pre>&lt;body style="position: polar;">
+<pre>&lt;body">
 
-    &lt;div id="circle1" style="polar-angle: 0deg; polar-distance: 50%">&lt;/div>
-    &lt;div id="circle2" style="polar-angle: 90deg; polar-distance: 20%">&lt;/div>
-    &lt;div id="circle3" style="polar-angle: 225deg; polar-distance: 100%">&lt;/div>
+    &lt;div id="circle1" style="position: polar; polar-angle: 0deg; polar-distance: 50%">&lt;/div>
+    &lt;div id="circle2" style="position: polar; polar-angle: 90deg; polar-distance: 20%">&lt;/div>
+    &lt;div id="circle3" style="position: polar; polar-angle: 225deg; polar-distance: 100%">&lt;/div>
 &lt;/body>
 </pre>
 </div>