diff --git a/css-typed-om/Overview.bs b/css-typed-om/Overview.bs
index 1a5ae54d..c4a321bb 100644
--- a/css-typed-om/Overview.bs
+++ b/css-typed-om/Overview.bs
@@ -300,7 +300,7 @@ The <dfn method for=StylePropertyMap>append(DOMString <var>property</var>,
 
     3. If {{StylePropertyMap}}’s [=property model=] contains an entry for |property|,
         return the first value found in that entry.
-    
+
     4. Else, return `null`.
 </div>
 
@@ -2273,7 +2273,7 @@ objects, the {{CSSURLImageValue/url}} attribute contains the URL that references
     when called,
     perform the following steps:
 
-    1. If the |url| passed into the constructor doesn't correctly 
+    1. If the |url| passed into the constructor doesn't correctly
         parse as a <<url>>, throw a {{TypeError}} and exit this algorithm.
     2. Else, return a new {{CSSURLImageValue}}
         with its {{CSSURLImageValue/url}} internal slot
@@ -2877,7 +2877,7 @@ depending on the property they came from:
     3. If 'border-image-slice' does not specify ''100%'' for all sides and omits the ''border-image-slice/fill'' keyword,
         serialize 'border-image-slice' and append it to |values|.
     4. If 'border-image-width' does not specify ''1'' for all sides,
-        append "/ " (U+002F FORWARD SLASH followed by U+0020 SPACE) 
+        append "/ " (U+002F FORWARD SLASH followed by U+0020 SPACE)
         to the result of serializing 'border-image-width' and append it to |values|.
     5. If 'border-image-outset' does not specify ''0'' for all sides:
         1. If the previous 'border-image-width' step did not append anything to |values|,
@@ -2886,7 +2886,7 @@ depending on the property they came from:
             otherwise let |prefix| be <nobr>"/ "</nobr>
             (U+002F FORWARD SLASH followed by U+0020 SPACE)
         2. Append |prefix|
-            to the result of serializing 'border-image-outset' 
+            to the result of serializing 'border-image-outset'
             and append it to |values|.
     6. If 'border-image-repeat' is not ''border-image-repeat/stretch'' in both axises,
         serialize 'border-image-repeat' and append it to |values|.
@@ -2909,6 +2909,45 @@ depending on the property they came from:
         return "currentcolor".
     2. Otherwise, return the result of serializing the <<color>> value.
 
+: 'display'
+::
+    1. Let |values| initially be the empty [=list=].
+    2. If <<display-outside>> or <<display-inside>> is specified:
+        1. Serialize value of <<display-outside>> and append it to |values|.
+        2. Serialize value of <<display-inside>> and append to |values|.
+        3. Goto step 7.
+    3. If <<display-listitem>> is specified:
+        1. Append "list-item" to |values|.
+        2. If <<display-outside>> is specified, serialize its value and append it to |values|.
+        3. If "flow" or "flow-root" is specified, append it to |values|.
+        4. Goto step 7.
+    4. If <<display-internal>> is specified:
+        1. Serialize its value and append it to |values|.
+        2. Goto step 7.
+    5. If <<display-box>> is specified:
+        1. Serialize its value and append it to |values|.
+        2. Goto step 7.
+    6. If <<display-legacy>> is specified:
+        1. Serialize its value and append it to |values|.
+        2. Goto step 7.
+    7. If |values| is:
+        1. «"block", "flow"», return "block".
+        2. «"block", "flow-root"», return "flow-root".
+        3. «"inline", "flow"», return "inline".
+        4. «"inline", "flow-root"», return "inline-block".
+        5. «"run-in", "flow"», return "run-in".
+        6. «"list-item", "block", "flow"», return "list-item".
+        7. «"list-item", "inline", "flow"», return the result of concatenating «"inline", "list-item"», separated by " " (U+0020 SPACE).
+        8. «"block", "flex"», return "flex".
+        9. «"inline", "flex"», return "inline-flex".
+        10. «"block", "grid"», return "grid".
+        11. «"inline", "grid"», return "inline-grid".
+        12. «"inline", "ruby"», return "ruby".
+        13. «"block", "table"», return "table".
+        14. «"inline", "table"», return "inline-table".
+        15. otherwise, return the result of concatenating all the items in |values|,
+        separated by " " (U+0020 SPACE).
+
 : 'left'
 ::
     1. If the value is the ''auto'' keyword,