[css-ruby] Define what happens to white space between two ruby base containers

Author: fantasai

css-ruby/Overview.html

@@ -509,8 +509,12 @@ <h3 class="heading settled heading" data-level=2.2 id=box-fixup><span class=secn
 				    <td><dfn data-dfn-type=dfn data-noexport="" id=inter-annotation-white-space>inter-annotation white space<a class=self-link href=#inter-annotation-white-space></a></dfn>
 				<tr><td><a data-link-type=dfn href=#ruby-annotation-box title="ruby annotation">ruby annotation</a> or <a data-link-type=dfn href=#ruby-annotation-container-box title="ruby annotation container">ruby annotation container</a>
 				    <td><a data-link-type=dfn href=#ruby-base-box title="ruby base">ruby base</a> or <a data-link-type=dfn href=#ruby-base-container-box title="ruby base container">ruby base container</a>
-				    <td><a data-link-type=dfn href=#ruby-base-box title="ruby base">ruby base</a>
-				    <td><dfn data-dfn-type=dfn data-noexport="" id=inter-segment-white-space>inter-segment white space<a class=self-link href=#inter-segment-white-space></a></dfn>
+				    <td rowspan=3><a data-link-type=dfn href=#ruby-base-box title="ruby base">ruby base</a>
+				    <td rowspan=3><dfn data-dfn-type=dfn data-noexport="" id=inter-segment-white-space>inter-segment white space<a class=self-link href=#inter-segment-white-space></a></dfn>
+				<tr><td><a data-link-type=dfn href=#ruby-base-box title="ruby base">ruby base</a> or <a data-link-type=dfn href=#ruby-base-container-box title="ruby base container">ruby base container</a>
+				    <td><a data-link-type=dfn href=#ruby-base-container-box title="ruby base container">ruby base container</a>
+				<tr><td><a data-link-type=dfn href=#ruby-base-container-box title="ruby base container">ruby base container</a>
+				    <td><a data-link-type=dfn href=#ruby-base-container-box title="ruby base container">ruby base container</a>
 			</table>
 			The <dfn data-dfn-type=dfn data-noexport="" id=intra-level-white-space>intra-level white space<a class=self-link href=#intra-level-white-space></a></dfn> boxes defined above are
 			treated specially for pairing and layout. See below.

css-ruby/Overview.src.html

@@ -355,8 +355,12 @@ <h3 id="box-fixup">
 				    <td><dfn>inter-annotation white space</dfn>
 				<tr><td><i>ruby annotation</i> or <i>ruby annotation container</i>
 				    <td><i>ruby base</i> or <i>ruby base container</i>
-				    <td><i>ruby base</i>
-				    <td><dfn>inter-segment white space</dfn>
+				    <td rowspan=3><i>ruby base</i>
+				    <td rowspan=3><dfn>inter-segment white space</dfn>
+				<tr><td><i>ruby base</i> or <i>ruby base container</i>
+				    <td><i>ruby base container</i>
+				<tr><td><i>ruby base container</i>
+				    <td><i>ruby base container</i>
 			</table>
 			The <dfn>intra-level white space</dfn> boxes defined above are
 			treated specially for pairing and layout. See below.