add missing table cell alignment classes

diff --git a/src/css/doc.css b/src/css/doc.css
index e5fe8fa..bb43af1 100644 (file)
--- a/src/css/doc.css
+++ b/src/css/doc.css
@@ -135,10 +135,26 @@
   text-align: left;
 }
 
+.doc .halign-right {
+  text-align: right;
+}
+
+.doc .halign-center {
+  text-align: center;
+}
+
 .doc .valign-top {
   vertical-align: top;
 }
 
+.doc .valign-bottom {
+  vertical-align: bottom;
+}
+
+.doc .valign-middle {
+  vertical-align: middle;
+}
+
 .doc .tableblock p {
   font-size: inherit;
 }