diff --git a/curriculum/challenges/english/01-responsive-web-design/basic-css/add-borders-around-your-elements.md b/curriculum/challenges/english/01-responsive-web-design/basic-css/add-borders-around-your-elements.md
index 4d395b07e01..51d36422daa 100644
--- a/curriculum/challenges/english/01-responsive-web-design/basic-css/add-borders-around-your-elements.md
+++ b/curriculum/challenges/english/01-responsive-web-design/basic-css/add-borders-around-your-elements.md
@@ -50,10 +50,14 @@ assert.isTrue(document.querySelector('img').classList.contains('thick-green-bord
 Your image should have a border width of `10px`.
 
 ```js
+// Note: to any future maintainers, the read width of the border is dependent on 
+// the zoom. For example we cannot match 10px exactly because if a campers set the zoom to 110% 
+// it will be read as 9~px. 
 const image = document.querySelector('img'); 
 const imageBorderTopWidth = window.getComputedStyle(image)["border-top-width"]; 
-
-assert.strictEqual(imageBorderTopWidth, "10px")
+const widthNumber = parseInt(imageBorderTopWidth);
+assert.isAtLeast(widthNumber, 8);
+assert.isAtMost(widthNumber, 12);
 ```
 
 Your image should have a border style of `solid`.