diff --git a/curriculum/challenges/english/25-front-end-development/workshop-cat-painting/6676a8a8d9861319ee901a90.md b/curriculum/challenges/english/25-front-end-development/workshop-cat-painting/6676a8a8d9861319ee901a90.md
index 16826bef5b2..9c8e3fbf247 100644
--- a/curriculum/challenges/english/25-front-end-development/workshop-cat-painting/6676a8a8d9861319ee901a90.md
+++ b/curriculum/challenges/english/25-front-end-development/workshop-cat-painting/6676a8a8d9861319ee901a90.md
@@ -19,68 +19,80 @@ Using a class selector, give the `.cat-left-ear` element a left and right border
 Your `.cat-right-ear` selector should not have a `height` property.
 
 ```js
-assert(!new __helpers.CSSHelp(document).getStyle('.cat-right-ear')?.height)
+if (new __helpers.CSSHelp(document)?.getStyle('.cat-right-ear')) {
+  assert.isEmpty(new __helpers.CSSHelp(document).getStyle('.cat-right-ear')?.height)
+}
 ```
 
 Your `.cat-right-ear` selector should not have a `width` property.
 
 ```js
-assert(!new __helpers.CSSHelp(document).getStyle('.cat-right-ear')?.width)
+if (new __helpers.CSSHelp(document)?.getStyle('.cat-right-ear')) {
+  assert.isEmpty(new __helpers.CSSHelp(document).getStyle('.cat-right-ear')?.width)
+}
 ```
 
 
 Your `.cat-right-ear` selector should not have a `border-left` property.
 
 ```js
-assert(!new __helpers.CSSHelp(document).getStyle('.cat-right-ear')?.borderLeft)
+if (new __helpers.CSSHelp(document)?.getStyle('.cat-right-ear')) {
+  assert.isEmpty(new __helpers.CSSHelp(document).getStyle('.cat-right-ear')?.borderLeft)
+}
 ```
 
 Your `.cat-right-ear` selector should not have a `border-right` property.
 
 ```js
-assert(!new __helpers.CSSHelp(document).getStyle('.cat-right-ear')?.borderRight)
+if (new __helpers.CSSHelp(document)?.getStyle('.cat-right-ear')) {
+  assert.isEmpty(new __helpers.CSSHelp(document).getStyle('.cat-right-ear')?.borderRight)
+}
 ```
 
 Your `.cat-right-ear` selector should not have a `border-top` property.
 
 ```js
-assert(!new __helpers.CSSHelp(document).getStyle('.cat-right-ear')?.borderTop)
+if (new __helpers.CSSHelp(document)?.getStyle('.cat-right-ear')) {
+  assert.isEmpty(new __helpers.CSSHelp(document).getStyle('.cat-right-ear')?.borderTop)
+}
 ```
 
 Your `.cat-right-ear` selector should not have a `border-bottom` property.
 
 ```js
-assert(!new __helpers.CSSHelp(document).getStyle('.cat-right-ear')?.borderBottom)
+if (new __helpers.CSSHelp(document)?.getStyle('.cat-right-ear')) {
+  assert.isEmpty(new __helpers.CSSHelp(document).getStyle('.cat-right-ear')?.borderBottom)
+}
 ```
 
 You should not have a `.cat-right-ear` selector.
 
 ```js
-assert(!new __helpers.CSSHelp(document)?.getStyle('.cat-right-ear'))
+assert.notExists(new __helpers.CSSHelp(document)?.getStyle('.cat-right-ear'))
 ```
 
 You should have a `.cat-left-ear` selector.
 
-```js 
-assert(new __helpers.CSSHelp(document).getStyle('.cat-left-ear'))
+```js
+assert.exists(new __helpers.CSSHelp(document)?.getStyle('.cat-left-ear'))
 ```
 
 Your `.cat-left-ear` selector should have a `border-left` property set to `35px solid transparent`
 
 ```js
-assert(new __helpers.CSSHelp(document).getStyle('.cat-left-ear')?.borderLeft === '35px solid transparent')
+assert.equal(new __helpers.CSSHelp(document).getStyle('.cat-left-ear')?.borderLeft, '35px solid transparent')
 ```
 
 Your `.cat-left-ear` selector should have a `border-right` property set to `35px solid transparent`
 
 ```js
-assert(new __helpers.CSSHelp(document).getStyle('.cat-left-ear')?.borderRight === '35px solid transparent')
+assert.equal(new __helpers.CSSHelp(document).getStyle('.cat-left-ear')?.borderRight, '35px solid transparent')
 ```
 
 Your `.cat-left-ear` selector should have a `border-bottom` property set to `70px solid #5e5e5e`
 
 ```js
-assert(new __helpers.CSSHelp(document).getStyle('.cat-left-ear')?.borderBottom === '70px solid rgb(94, 94, 94)')
+assert.equal(new __helpers.CSSHelp(document).getStyle('.cat-left-ear')?.borderBottom, '70px solid rgb(94, 94, 94)')
 ```
 
 # --seed--