diff --git a/css-display-4/Overview.bs b/css-display-4/Overview.bs
index 3146d15b2f3..edff79a2c5e 100644
--- a/css-display-4/Overview.bs
+++ b/css-display-4/Overview.bs
@@ -823,7 +823,7 @@ Automatic Box Type Transformations
so that it remains a block container.
* If an [=inline box=] (''inline flow'') is inlinified,
- it recursively inlinifies all of its in-flow children,
+ it recursively inlinifies all of its in-flow children,
so that no block-level descendants
break up the inline formatting context in which it participates.
@@ -1170,7 +1170,7 @@ A reading flow container is a flex or grid container
with a valid 'reading-flow' value other than ''normal''.
The rendering-defined sibling reading flow of a reading flow container
-is an ordered list of in-flow children of the container.
+is an ordered list of in-flow children of the container.
All children must render to an element and are considered siblings in the reading flow container.
The order is determined by the 'reading-flow' property.
@@ -1576,7 +1576,7 @@ Run-In Layout
A run-in sequence is a maximal sequence of consecutive sibling run-in boxes
- and intervening white space and/or out-of-flow boxes.
+ and intervening white space and/or out-of-flow boxes.
Note: This statement implies that out-of-flow boxes are reparented
if they are between two run-in boxes.
@@ -1777,7 +1777,7 @@ Appendix A: Glossary
that form an ancestor-descendant chain
through the containing block relation.
For example, an inline box’s containing block is the content box of its closest block container ancestor;
- if that block container is an in-flow block,
+ if that block container is an in-flow block,
then its containing block is formed by its parent block container;
if that grandparent block container is absolutely positioned,
then its containing block is the padding edges of its closest positioned ancestor (not necessarily its parent),