fix(learn): colored markers - step 5 - validation (#47808)

curriculum/challenges/english/14-responsive-web-design-22/learn-css-colors-by-building-a-set-of-colored-markers/616965351e74d4689eb6de30.md

@@ -28,7 +28,8 @@ Your new `meta` element should have a `name` attribute set to `viewport`, and a
 
 ```js
 const meta = [...document.querySelectorAll('meta')];
-const target = meta?.find(m => m?.getAttribute('name') === 'viewport' && m?.getAttribute('content') === 'width=device-width, initial-scale=1.0');
+const reValidContent = /^\s*width\s*=\s*device-width\s*,\s*initial-scale\s*=\s*1(?:\.0)?\s*$/;
+const target = meta?.find(m => m?.getAttribute('name') === 'viewport' && reValidContent.test(m?.getAttribute('content')));
 assert.exists(target);
 ```