'Random Background Color Changer' docs: README.me add description step 5 (variation_2)

Author: AndriiKot

README.md

@@ -6,6 +6,23 @@ Debugging is the process of going through your code, finding any issues, and fix
 
 In this project, you will help CamperBot build a random background color changer and help them find and fix errors.
 
+<details>
+  <summary>
+    <h4>Description of the Tasks</h4>
+  </summary>
+  <details>
+    <summary>
+      <h5>Step 5</h5>
+    </summary>
+      <p>
+        CamperBot has created a new variable called <code>bgHexCodeSpanElement</code> to store the reference to the <code>span</code> element with the <code>id</code> of <code>bg-hex-code</code>. However, when they try to log that variable to the console, they get <code>null</code>
+        <code>null</code> is a special value in JavaScript that represents the absence of a value. This can happen when you try to access a property of an object that doesn't exist
+        In this case, CamperBot is not passing in the correct selector to the <code>document.querySelector</code> method
+        Fix the <code>document.querySelector("bg-hex-code")</code> line so that it correctly selects the element with the <code>id</code> of <code>bg-hex-code</code>.
+      </p>
+  </details>
+</details>
+
 #### preview
 
 ![preview 'Random Background Color Changer step 4'](https://github.com/AndriiKot/JS__Random_Background_Color_Changer__freeCodeCamp/blob/main/preview/step1.png)