diff --git a/curriculum/challenges/chinese-traditional/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md b/curriculum/challenges/chinese-traditional/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
index 1a5ad7e69ca..54ebb4f7378 100644
--- a/curriculum/challenges/chinese-traditional/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
+++ b/curriculum/challenges/chinese-traditional/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
@@ -15,6 +15,9 @@ dashedName: use-css-animation-to-change-the-hover-state-of-a-button
 
 ```html
 <style>
+  img {
+    width: 30px;  
+  }
   img:hover {
     animation-name: width;
     animation-duration: 500ms;
diff --git a/curriculum/challenges/chinese/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md b/curriculum/challenges/chinese/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
index dc5c7d6089b..2a2140429f1 100644
--- a/curriculum/challenges/chinese/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
+++ b/curriculum/challenges/chinese/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
@@ -15,6 +15,9 @@ dashedName: use-css-animation-to-change-the-hover-state-of-a-button
 
 ```html
 <style>
+  img {
+    width: 30px;
+  }
   img:hover {
     animation-name: width;
     animation-duration: 500ms;
diff --git a/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md b/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
index 73d10af0037..f26d2585dd7 100644
--- a/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
+++ b/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
@@ -15,6 +15,9 @@ Here's an example of changing the width of an image on hover:
 
 ```html
 <style>
+  img {
+    width: 30px;
+  }
   img:hover {
     animation-name: width;
     animation-duration: 500ms;
diff --git a/curriculum/challenges/espanol/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md b/curriculum/challenges/espanol/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
index 40b0b75ad1b..2236e177ffd 100644
--- a/curriculum/challenges/espanol/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
+++ b/curriculum/challenges/espanol/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
@@ -15,6 +15,9 @@ Aquí hay un ejemplo de como cambiar el ancho de una imagen al pasar sobre ella:
 
 ```html
 <style>
+  img {
+    width: 30px;
+  }
   img:hover {
     animation-name: width;
     animation-duration: 500ms;
diff --git a/curriculum/challenges/italian/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md b/curriculum/challenges/italian/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
index 673974cf712..cf6baacd05a 100644
--- a/curriculum/challenges/italian/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
+++ b/curriculum/challenges/italian/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
@@ -15,6 +15,9 @@ Ecco un esempio di cambiamento della larghezza di un'immagine quando ci si passa
 
 ```html
 <style>
+  img {
+    width: 30px;
+  }
   img:hover {
     animation-name: width;
     animation-duration: 500ms;
diff --git a/curriculum/challenges/portuguese/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md b/curriculum/challenges/portuguese/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
index dbf0a12c2ec..32a974d2d53 100644
--- a/curriculum/challenges/portuguese/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
+++ b/curriculum/challenges/portuguese/01-responsive-web-design/applied-visual-design/use-css-animation-to-change-the-hover-state-of-a-button.md
@@ -15,6 +15,9 @@ Aqui está um exemplo de alteração da largura de uma imagem ao passar o cursor
 
 ```html
 <style>
+  img {
+    width: 30px;
+  }
   img:hover {
     animation-name: width;
     animation-duration: 500ms;