diff --git a/curriculum/challenges/chinese-traditional/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md b/curriculum/challenges/chinese-traditional/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md
index ea8d398615..17b9eb61a3 100644
--- a/curriculum/challenges/chinese-traditional/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md
+++ b/curriculum/challenges/chinese-traditional/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md
@@ -27,38 +27,43 @@ dashedName: set-the-font-size-for-multiple-heading-elements
 `h1` 標籤的 `font-size` 屬性值應爲 68px。
 
 ```js
-assert($('h1').css('font-size') == '68px');
+ const fontSizeOfh1 = new __helpers.CSSHelp(document).getStyle('h1')?.getPropertyValue('font-size');
+ assert(fontSizeOfh1 === '68px');
 ```
 
 `h2` 標籤的 `font-size` 屬性值應爲 52px。
 
 ```js
-assert($('h2').css('font-size') == '52px');
+ const fontSizeOfh2 = new __helpers.CSSHelp(document).getStyle('h2')?.getPropertyValue('font-size');
+ assert(fontSizeOfh2 === '52px');
 ```
 
 `h3` 標籤的 `font-size` 屬性值應爲 40px。
 
 ```js
-assert($('h3').css('font-size') == '40px');
+ const fontSizeOfh3 = new __helpers.CSSHelp(document).getStyle('h3')?.getPropertyValue('font-size');
+ assert(fontSizeOfh3 === '40px');
 ```
 
 `h4` 標籤的 `font-size` 屬性值應爲 32px。
 
 ```js
-assert($('h4').css('font-size') == '32px');
+ const fontSizeOfh4 = new __helpers.CSSHelp(document).getStyle('h4')?.getPropertyValue('font-size');
+ assert(fontSizeOfh4 === '32px');
 ```
 
 `h5` 標籤的 `font-size` 屬性值應爲 21px。
 
 ```js
-assert($('h5').css('font-size') == '21px');
+ const fontSizeOfh5 = new __helpers.CSSHelp(document).getStyle('h5')?.getPropertyValue('font-size');
+ assert(fontSizeOfh5 === '21px');
 ```
 
 `h6` 標籤的 `font-size` 屬性值應爲 14px。
 
 ```js
-const regex = /h6\s*\{\s*font-size\s*:\s*14px\s*(;\s*\}|\})/i;
-assert.strictEqual(true, regex.test(code));
+ const fontSizeOfh6 = new __helpers.CSSHelp(document).getStyle('h6')?.getPropertyValue('font-size');
+ assert(fontSizeOfh6 === '14px');
 ```
 
 # --seed--
diff --git a/curriculum/challenges/chinese/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md b/curriculum/challenges/chinese/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md
index eccfaf61c8..62a8c578d9 100644
--- a/curriculum/challenges/chinese/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md
+++ b/curriculum/challenges/chinese/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md
@@ -27,38 +27,43 @@ dashedName: set-the-font-size-for-multiple-heading-elements
 `h1` 标签的 `font-size` 属性值应为 68px。
 
 ```js
-assert($('h1').css('font-size') == '68px');
+ const fontSizeOfh1 = new __helpers.CSSHelp(document).getStyle('h1')?.getPropertyValue('font-size');
+ assert(fontSizeOfh1 === '68px');
 ```
 
 `h2` 标签的 `font-size` 属性值应为 52px。
 
 ```js
-assert($('h2').css('font-size') == '52px');
+ const fontSizeOfh2 = new __helpers.CSSHelp(document).getStyle('h2')?.getPropertyValue('font-size');
+ assert(fontSizeOfh2 === '52px');
 ```
 
 `h3` 标签的 `font-size` 属性值应为 40px。
 
 ```js
-assert($('h3').css('font-size') == '40px');
+ const fontSizeOfh3 = new __helpers.CSSHelp(document).getStyle('h3')?.getPropertyValue('font-size');
+ assert(fontSizeOfh3 === '40px');
 ```
 
 `h4` 标签的 `font-size` 属性值应为 32px。
 
 ```js
-assert($('h4').css('font-size') == '32px');
+ const fontSizeOfh4 = new __helpers.CSSHelp(document).getStyle('h4')?.getPropertyValue('font-size');
+ assert(fontSizeOfh4 === '32px');
 ```
 
 `h5` 标签的 `font-size` 属性值应为 21px。
 
 ```js
-assert($('h5').css('font-size') == '21px');
+ const fontSizeOfh5 = new __helpers.CSSHelp(document).getStyle('h5')?.getPropertyValue('font-size');
+ assert(fontSizeOfh5 === '21px');
 ```
 
 `h6` 标签的 `font-size` 属性值应为 14px。
 
 ```js
-const regex = /h6\s*\{\s*font-size\s*:\s*14px\s*(;\s*\}|\})/i;
-assert.strictEqual(true, regex.test(code));
+ const fontSizeOfh6 = new __helpers.CSSHelp(document).getStyle('h6')?.getPropertyValue('font-size');
+ assert(fontSizeOfh6 === '14px');
 ```
 
 # --seed--
diff --git a/curriculum/challenges/espanol/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md b/curriculum/challenges/espanol/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md
index 33307a1485..4c327c18e6 100644
--- a/curriculum/challenges/espanol/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md
+++ b/curriculum/challenges/espanol/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md
@@ -27,38 +27,43 @@ La propiedad `font-size` se usa para especificar que tan grande es el texto en u
 Tu código debe establecer la propiedad `font-size` para la etiqueta `h1` en 68 píxeles.
 
 ```js
-assert($('h1').css('font-size') == '68px');
+ const fontSizeOfh1 = new __helpers.CSSHelp(document).getStyle('h1')?.getPropertyValue('font-size');
+ assert(fontSizeOfh1 === '68px');
 ```
 
 Tu código debe establecer la propiedad `font-size` para la etiqueta `h2` en 52 píxeles.
 
 ```js
-assert($('h2').css('font-size') == '52px');
+ const fontSizeOfh2 = new __helpers.CSSHelp(document).getStyle('h2')?.getPropertyValue('font-size');
+ assert(fontSizeOfh2 === '52px');
 ```
 
 Tu código debe establecer la propiedad `font-size` para la etiqueta `h3` en 40 píxeles.
 
 ```js
-assert($('h3').css('font-size') == '40px');
+ const fontSizeOfh3 = new __helpers.CSSHelp(document).getStyle('h3')?.getPropertyValue('font-size');
+ assert(fontSizeOfh3 === '40px');
 ```
 
 Tu código debe establecer la propiedad `font-size` para la etiqueta `h4` en 32 píxeles.
 
 ```js
-assert($('h4').css('font-size') == '32px');
+ const fontSizeOfh4 = new __helpers.CSSHelp(document).getStyle('h4')?.getPropertyValue('font-size');
+ assert(fontSizeOfh4 === '32px');
 ```
 
 Tu código debe establecer la propiedad `font-size` para la etiqueta `h5` en 21 píxeles.
 
 ```js
-assert($('h5').css('font-size') == '21px');
+ const fontSizeOfh5 = new __helpers.CSSHelp(document).getStyle('h5')?.getPropertyValue('font-size');
+ assert(fontSizeOfh5 === '21px');
 ```
 
 Tu código debe establecer la propiedad `font-size` para la etiqueta `h6` en 14 píxeles.
 
 ```js
-const regex = /h6\s*\{\s*font-size\s*:\s*14px\s*(;\s*\}|\})/i;
-assert.strictEqual(true, regex.test(code));
+ const fontSizeOfh6 = new __helpers.CSSHelp(document).getStyle('h6')?.getPropertyValue('font-size');
+ assert(fontSizeOfh6 === '14px');
 ```
 
 # --seed--
diff --git a/curriculum/challenges/italian/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md b/curriculum/challenges/italian/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md
index 0a3e64d7e8..bd556d694b 100644
--- a/curriculum/challenges/italian/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md
+++ b/curriculum/challenges/italian/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md
@@ -27,38 +27,43 @@ La proprietà `font-size` è usata per specificare quanto grande è il testo in
 Il codice dovrebbe impostare la proprietà `font-size` per il tag `h1` a 68 pixel.
 
 ```js
-assert($('h1').css('font-size') == '68px');
+ const fontSizeOfh1 = new __helpers.CSSHelp(document).getStyle('h1')?.getPropertyValue('font-size');
+ assert(fontSizeOfh1 === '68px');
 ```
 
 Il codice dovrebbe impostare la proprietà `font-size` per il tag `h2` a 52 pixel.
 
 ```js
-assert($('h2').css('font-size') == '52px');
+ const fontSizeOfh2 = new __helpers.CSSHelp(document).getStyle('h2')?.getPropertyValue('font-size');
+ assert(fontSizeOfh2 === '52px');
 ```
 
 Il codice dovrebbe impostare la proprietà `font-size` per il tag `h3` a 40 pixel.
 
 ```js
-assert($('h3').css('font-size') == '40px');
+ const fontSizeOfh3 = new __helpers.CSSHelp(document).getStyle('h3')?.getPropertyValue('font-size');
+ assert(fontSizeOfh3 === '40px');
 ```
 
 Il codice dovrebbe impostare la proprietà `font-size` per il tag `h4` a 32 pixel.
 
 ```js
-assert($('h4').css('font-size') == '32px');
+ const fontSizeOfh4 = new __helpers.CSSHelp(document).getStyle('h4')?.getPropertyValue('font-size');
+ assert(fontSizeOfh4 === '32px');
 ```
 
 Il codice dovrebbe impostare la proprietà `font-size` per il tag `h5` a 21 pixel.
 
 ```js
-assert($('h5').css('font-size') == '21px');
+ const fontSizeOfh5 = new __helpers.CSSHelp(document).getStyle('h5')?.getPropertyValue('font-size');
+ assert(fontSizeOfh5 === '21px');
 ```
 
 Il codice dovrebbe impostare la proprietà `font-size` per il tag `h6` a 14 pixel.
 
 ```js
-const regex = /h6\s*\{\s*font-size\s*:\s*14px\s*(;\s*\}|\})/i;
-assert.strictEqual(true, regex.test(code));
+ const fontSizeOfh6 = new __helpers.CSSHelp(document).getStyle('h6')?.getPropertyValue('font-size');
+ assert(fontSizeOfh6 === '14px');
 ```
 
 # --seed--
diff --git a/curriculum/challenges/portuguese/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md b/curriculum/challenges/portuguese/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md
index b1a3eb78d1..b9b410c7db 100644
--- a/curriculum/challenges/portuguese/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md
+++ b/curriculum/challenges/portuguese/01-responsive-web-design/applied-visual-design/set-the-font-size-for-multiple-heading-elements.md
@@ -27,38 +27,43 @@ A propriedade `font-size` é usada para especificar o quão grande será o texto
 A tag `h1` deve ter a propriedade `font-size` com o valor de 68 pixels.
 
 ```js
-assert($('h1').css('font-size') == '68px');
+ const fontSizeOfh1 = new __helpers.CSSHelp(document).getStyle('h1')?.getPropertyValue('font-size');
+ assert(fontSizeOfh1 === '68px');
 ```
 
 A tag `h2` deve ter a propriedade `font-size` com o valor de 52 pixels.
 
 ```js
-assert($('h2').css('font-size') == '52px');
+ const fontSizeOfh2 = new __helpers.CSSHelp(document).getStyle('h2')?.getPropertyValue('font-size');
+ assert(fontSizeOfh2 === '52px');
 ```
 
 A tag `h3` deve ter a propriedade `font-size` com o valor de 40 pixels.
 
 ```js
-assert($('h3').css('font-size') == '40px');
+ const fontSizeOfh3 = new __helpers.CSSHelp(document).getStyle('h3')?.getPropertyValue('font-size');
+ assert(fontSizeOfh3 === '40px');
 ```
 
 A tag `h4` deve ter a propriedade `font-size` com o valor de 32 pixels.
 
 ```js
-assert($('h4').css('font-size') == '32px');
+ const fontSizeOfh4 = new __helpers.CSSHelp(document).getStyle('h4')?.getPropertyValue('font-size');
+ assert(fontSizeOfh4 === '32px');
 ```
 
 A tag `h5` deve ter a propriedade `font-size` com o valor de 21 pixels.
 
 ```js
-assert($('h5').css('font-size') == '21px');
+ const fontSizeOfh5 = new __helpers.CSSHelp(document).getStyle('h5')?.getPropertyValue('font-size');
+ assert(fontSizeOfh5 === '21px');
 ```
 
 A tag `h6` deve ter a propriedade `font-size` com o valor de 14 pixels.
 
 ```js
-const regex = /h6\s*\{\s*font-size\s*:\s*14px\s*(;\s*\}|\})/i;
-assert.strictEqual(true, regex.test(code));
+ const fontSizeOfh6 = new __helpers.CSSHelp(document).getStyle('h6')?.getPropertyValue('font-size');
+ assert(fontSizeOfh6 === '14px');
 ```
 
 # --seed--
diff --git a/curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-plus-operator.md b/curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-plus-operator.md
index 2ffced0543..4e63e28984 100644
--- a/curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-plus-operator.md
+++ b/curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-plus-operator.md
@@ -28,7 +28,7 @@ var ourStr = "I come first. " + "I come second.";
 A string `I come first. I come second.` seria exibida no console.
 # --instructions--
 
-Crie `myStr` a partir das strings `This is the start.` e `This is the end.` usando o operador `+`.
+Crie `myStr` a partir das strings `This is the start.` e `This is the end.` usando o operador `+`. Não se esqueça de incluir um espaço entre as duas strings.
 
 # --hints--
 
diff --git a/curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-the-plus-equals-operator.md b/curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-the-plus-equals-operator.md
index e4c629bd08..71904013f2 100644
--- a/curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-the-plus-equals-operator.md
+++ b/curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-the-plus-equals-operator.md
@@ -24,7 +24,7 @@ ourStr += "I come second.";
 
 # --instructions--
 
-Crie `myStr` em várias linhas concatenando essas duas strings: `This is the first sentence.` e `This is the second sentence.` usando o operador `+=`. Use o operador `+=` de modo semelhante a como aparece no exemplo. Comece atribuindo o primeiro texto para `myStr`, e então adicione o segundo texto.
+Crie `myStr` em várias linhas concatenando essas duas strings: `This is the first sentence.` e `This is the second sentence.` usando o operador `+=`. Use o operador `+=` de modo semelhante a como ele é mostrado no exemplo e certifique-se de incluir um espaço entre as duas strings. Comece atribuindo o primeiro texto para `myStr`, e então adicione o segundo texto.
 
 # --hints--