diff --git a/curriculum/challenges/english/blocks/lecture-what-is-css/672acc03c257524d6a5151e8.md b/curriculum/challenges/english/blocks/lecture-what-is-css/672acc03c257524d6a5151e8.md
index c1e5748e187..169036da5b8 100644
--- a/curriculum/challenges/english/blocks/lecture-what-is-css/672acc03c257524d6a5151e8.md
+++ b/curriculum/challenges/english/blocks/lecture-what-is-css/672acc03c257524d6a5151e8.md
@@ -11,7 +11,7 @@ In CSS, the `width` and `height` properties are used to control the dimensions o
 
 These properties can be defined in different units such as pixels (`px`), percentages (`%`), viewport units (`vw`, `vh`), and more.
 
-The `width` property specifies the width of an element. If you do not specify a width, then the default is set to `auto`. This means the element will take up the full width of its parent container.
+The `width` property specifies the width of an element. If you do not specify a width, then the default is set to `auto`. This lets the browser determine the element's width based on its content, parent, and display type. For a `div` element, `width: auto` makes it expand to fill the full width of its parent container.
 
 The `height` property specifies the height of an element. Similarly, the height is `auto` by default, which means it will adjust to the content inside.
 
diff --git a/curriculum/challenges/english/blocks/review-basic-css/671a887a7e62c75e9ab1ee4a.md b/curriculum/challenges/english/blocks/review-basic-css/671a887a7e62c75e9ab1ee4a.md
index 0bf74e22a56..973a5237e67 100644
--- a/curriculum/challenges/english/blocks/review-basic-css/671a887a7e62c75e9ab1ee4a.md
+++ b/curriculum/challenges/english/blocks/review-basic-css/671a887a7e62c75e9ab1ee4a.md
@@ -38,7 +38,7 @@ Here is an example of inline CSS:
 
 ## Working With the `width` and `height` Properties
 
-- **`width` Property**: This property specifies the width of an element. If you do not specify a width, then the default is set to `auto`. This means the element will take up the full width of its parent container.
+- **`width` Property**: This property specifies the width of an element. If you do not specify a width, then the default is set to `auto`. This lets the browser determine the element's width based on its content, parent, and display type.
 - **`min-width` Property**: This property specifies the minimum width for an element.
 - **`max-width` Property**: This property specifies the maximum width for an element.
 - **`height` Property**: This property specifies the height of an element. Similarly, the height is `auto` by default, which means it will adjust to the content inside.
diff --git a/curriculum/challenges/english/blocks/review-css/671a9a0a140c2b9d6a75629f.md b/curriculum/challenges/english/blocks/review-css/671a9a0a140c2b9d6a75629f.md
index 83f4ba16e9a..67bcbd1e5af 100644
--- a/curriculum/challenges/english/blocks/review-css/671a9a0a140c2b9d6a75629f.md
+++ b/curriculum/challenges/english/blocks/review-css/671a9a0a140c2b9d6a75629f.md
@@ -24,7 +24,7 @@ Review the concepts below to prepare for the upcoming exam.
 
 ## Working With the `width` and `height` Properties
 
-- **`width` Property**: This property specifies the width of an element. If you do not specify a width, then the default is set to `auto`. This means the element will take up the full width of its parent container.
+- **`width` Property**: This property specifies the width of an element. If you do not specify a width, then the default is set to `auto`. This lets the browser determine the element's width based on its content, parent, and display type.
 - **`min-width` Property**: This property specifies the minimum width for an element.
 - **`max-width` Property**: This property specifies the maximum width for an element.
 - **`height` Property**: This property specifies the height of an element. Similarly, the height is `auto` by default, which means it will adjust to the content inside.