fix(challenges): Revert CSS regex test

Some CSS tests were changed to regex tests while the CSS tests weren't
working on Firefox. Now that the original issue has been fixed, these
changes can be reverted.

Closes #15567

challenges/01-responsive-web-design/applied-visual-design.json

@@ -1387,9 +1387,9 @@
         "<div class=\"raspberry\"></div>"
       ],
       "tests": [
-        "assert(code.match(/.orange\\s*\\{\\s*background-color:\\s*(#FF7D00|#ff7d00);?\\s*\\}/g), 'message: The <code>div</code> element with class <code>orange</code> should have a <code>background-color</code> of orange.');",
+        "assert($('.orange').css('background-color') == 'rgb(255, 125, 0)', 'message: The <code>div</code> element with class <code>orange</code> should have a <code>background-color</code> of orange.');",
-        "assert(code.match(/.cyan\\s*\\{\\s*background-color:\\s*(#00FFFF|#00ffff);?\\s*\\}/g), 'message: The <code>div</code> element with class <code>cyan</code> should have a <code>background-color</code> of cyan.');",
+        "assert($('.cyan').css('background-color') == 'rgb(0, 255, 255)', 'message: The <code>div</code> element with class <code>cyan</code> should have a <code>background-color</code> of cyan.');",
-        "assert(code.match(/.raspberry\\s*\\{\\s*background-color:\\s*(#FF007D|#ff007d);?\\s*\\}/g), 'message: The <code>div</code> element with class <code>raspberry</code> should have a <code>background-color</code> of raspberry.');"
+        "assert($('.raspberry').css('background-color') == 'rgb(255, 0, 125)', 'message: The <code>div</code> element with class <code>raspberry</code> should have a <code>background-color</code> of raspberry.');"
       ],
       "solutions": [],
       "hints": [],

challenges/01-responsive-web-design/basic-css.json

@@ -88,7 +88,7 @@
         "</main>"
       ],
       "tests": [
-        "assert(code.match(/<h2\\s+style\\s*=\\s*(\\'|\")\\s*color\\s*:\\s*(?:rgb\\(\\s*255\\s*,\\s*0\\s*,\\s*0\\s*\\)|rgb\\(\\s*100%\\s*,\\s*0%\\s*,\\s*0%\\s*\\)|red|#ff0000|#f00|hsl\\(\\s*0\\s*,\\s*100%\\s*,\\s*50%\\s*\\))\\s*\\;?(\\'|\")>\\s*CatPhotoApp\\s*<\\/h2>/), 'message: Your <code>h2</code> element should be red.');",
+        "assert($(\"h2\").css(\"color\") === \"rgb(255, 0, 0)\", 'message: Your <code>h2</code> element should be red.');",
         "assert(code.match(/<h2\\s+style\\s*=\\s*(\\'|\")\\s*color\\s*:\\s*(?:rgb\\(\\s*255\\s*,\\s*0\\s*,\\s*0\\s*\\)|rgb\\(\\s*100%\\s*,\\s*0%\\s*,\\s*0%\\s*\\)|red|#ff0000|#f00|hsl\\(\\s*0\\s*,\\s*100%\\s*,\\s*50%\\s*\\))\\s*\\;(\\'|\")>\\s*CatPhotoApp\\s*<\\/h2>/),' message: Your <code>style</code> declaration should end with a <code>;</code> .');"
       ],
       "type": "waypoint",

challenges/01-responsive-web-design/responsive-web-design.json

@@ -97,7 +97,7 @@
         "<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus quis tempus massa. Aenean erat nisl, gravida vel vestibulum cursus, interdum sit amet lectus. Sed sit amet quam nibh. Suspendisse quis tincidunt nulla. In hac habitasse platea dictumst. Ut sit amet pretium nisl. Vivamus vel mi sem. Aenean sit amet consectetur sem. Suspendisse pretium, purus et gravida consequat, nunc ligula ultricies diam, at aliquet velit libero a dui.</p>"
       ],
       "tests": [
-        "assert(code.match(/p\\s*\\{\\s*font-size:\\s*10px;\\s*\\}/g), 'message: Your <code>p</code> element should have the <code>font-size</code> of 10px when the device <code>height</code> is less than or equal to 800px.');",
+        "assert($('p').css('font-size') == '10px', 'message: Your <code>p</code> element should have the <code>font-size</code> of 10px when the device <code>height</code> is less than or equal to 800px.');",
         "assert(code.match(/@media \\(max-height:\\s*?800px\\)/g), 'message: Declare a <code>@media</code> query for devices with a <code>height</code> less than or equal to 800px.');"
       ],
       "type": "waypoint",