Added a solution to fix stub (#34813)

I am brand new to FCC and contributing on Github. I read the guide from FCC on best contributing practices, but this is all still very overwhelming to me.  If I did something incorrectly in my first attempt at a pull request, please let me know.

curriculum/challenges/english/01-responsive-web-design/basic-css/prioritize-one-style-over-another.english.md

@@ -60,6 +60,17 @@ tests:
 <section id='solution'>
 
 ```js
-// solution required
+<style>
+  body {
+    background-color: black;
+    font-family: monospace;
+    color: green;
+  }
+  .pink-text {
+    color: pink;
+  }
+</style>
+<h1 class="pink-text">Hello World!</h1>
+
 ```
 </section>