diff --git a/cssom-1/Overview.bs b/cssom-1/Overview.bs
index 76438a28f702..ca6822438068 100644
--- a/cssom-1/Overview.bs
+++ b/cssom-1/Overview.bs
@@ -1888,9 +1888,9 @@ To serialize a CSS rule, perform one of the following in accor
- The string "
@media", followed by a single SPACE (U+0020).
- The result of performing serialize a media query list on rule's media query list.
- - A single SPACE (U+0020), followed by the string "{", i.e., LEFT CURLY BRACKET (U+007B), followed by a newline.
+ - A single SPACE (U+0020), followed by the string "{", i.e., LEFT CURLY BRACKET (U+007B).
- The result of performing serialize a CSS rule on each rule in the rule's {{CSSGroupingRule/cssRules}} list,
- filtering out empty strings, indenting each item with two spaces, all joined with newline.
+ filtering out empty strings, all preceded by a newline and indented by two spaces.
- A newline, followed by the string "}", i.e., RIGHT CURLY BRACKET (U+007D)
@@ -1974,7 +1974,7 @@ To serialize a CSS rule, perform one of the following in accor
The serialization of the {{CSSKeyframesRule/name}} attribute. If the attribute is a CSS wide keyword, or the value default, or the value none,
then it is [=serialized as a string=]. Otherwise, it is serialized as an identifier.
The string " { ", i.e., a single SPACE (U+0020), followed by LEFT CURLY BRACKET (U+007B), followed by a single SPACE (U+0020).
- The result of performing serialize a CSS rule on each rule in the rule's {{CSSKeyframesRule/cssRules}} list, separated by a newline and indented by two spaces.
+ The result of performing serialize a CSS rule on each rule in the rule's {{CSSKeyframesRule/cssRules}} list, preceded by a newline and indented by two spaces.
A newline, followed by the string "}", i.e., RIGHT CURLY BRACKET (U+007D)