diff --git a/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/decrease-the-opacity-of-an-element.english.md b/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/decrease-the-opacity-of-an-element.english.md
index 098637e072..876ddd98c0 100644
--- a/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/decrease-the-opacity-of-an-element.english.md
+++ b/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/decrease-the-opacity-of-an-element.english.md
@@ -23,7 +23,7 @@ Set the <code>opacity</code> of the anchor tags to 0.7 using <code>links</code>
 ```yml
 tests:
   - text: Your code should set the <code>opacity</code> property to 0.7 on the anchor tags by selecting the class of <code>links</code>.
-    testString: assert.approximately(parseFloat($('.links').css('opacity')), 0.7, 0.1, 'Your code should set the <code>opacity</code> property to 0.7 on the anchor tags by selecting the class of <code>links</code>.');
+    testString: assert(/\.links\s*\{[^}]+opacity\s*:\s*0.7;/.test(code), 'Your code should set the <code>opacity</code> property to 0.7 on the anchor tags by selecting the class of <code>links</code>.');
 
 ```