[css-round-display] Fix something incorrect about viewport-fit

Author: jihyerish

css-round-display/Overview.bs

@@ -221,7 +221,10 @@ Extending the @viewport rule {#extending-viewport-rule}
     Computed value: as specified
 </pre>
 
-The initial layout viewport seen through the physical screen of the device. On rounded screen, the part of the page that’s currently shown on-screen is round but the viewport is rectangular. Because of this, depending on the size of the viewport, some part of the page may be clipped.
+The initial layout viewport seen through the physical screen of the device.
+On rounded screen, the part of the page that’s currently shown on-screen is round but 
+the viewport is rectangular.
+Because of this, depending on the size of the viewport, some part of the page may be clipped.
 
 <div class=figure>
     <img alt="An image of the clipped area between the viewport bounding box and the device's border" style="width: 250px" src="images/viewport_clipped_area.png">
@@ -237,18 +240,28 @@ Values have the following meanings:
 <dl dfn-type=value dfn-for=viewport-fit>
     <dt><dfn>auto</dfn></dt>
     <dd>
-        This value doesn’t affect the initial layout viewport, and the whole web page is viewable. What the UA paints outside of the viewport is undefined. It may be the background color of the canvas, or anything else that the UA deems appropriate..
+        This value doesn’t affect the initial layout viewport, 
+		and the whole web page is viewable. 
+		What the UA paints outside of the viewport is undefined. 
+		It may be the background color of the canvas, or anything else 
+		that the UA deems appropriate.
     </dd>
 
     <dt><dfn>contain</dfn></dt>
     <dd>
-        The initial layout viewport and the visual viewport are set to the largest rectangle which is inscribed in the display of the device. UA can paint the area which is outside the contained viewport for ''contain''.
+        The initial layout viewport and the visual viewport are set to the largest rectangle 
+		which is inscribed in the display of the device.
+		What the UA paints outside of the viewport is undefined. 
+		It may be the background color of the canvas, or anything else that
+		the UA deems appropriate.
     </dd>
-    <p class="note">Note: With this value, 'border-boundary: display' and 'shape-inside: display' have no effect.</p>
+    <p class="note">Note: With this value, 'border-boundary: display' and 
+	'shape-inside: display' have no effect.</p>
 
     <dt><dfn>cover</dfn></dt>
     <dd>
-        The initial layout viewport and the visual viewport are set to the circumscribed rectangle of the physical screen of the device.
+        The initial layout viewport and the visual viewport are set to the circumscribed 
+		rectangle of the physical screen of the device.
     </dd>
 </dl>