Add third article about Git branches

Author: codebyra

Wireframe/index.html

@@ -18,13 +18,21 @@ <h2>What is the purpose of a README file?</h2i>
         <p>A README explains what a project does, how to install it, and how to use it.</p>
         <a href="#">Learn more</a>
       </article>
+
       <article>
         <img src="placeholder.svg" alt="Wireframe sketch" />
         <h2>What is the purpose of a wireframe?</h2>
         <p>A wireframe shows the layout of a webpage before coding begins. It helps developers plan structure and content.</p>
         <a href="#">Learn more</a>
       </article>
 
+      <article>
+        <img src="placeholder.svg" alt="Git branch diagram" />
+        <h2>What is a branch in Git?</h2>
+        <p>A branch allows you to work on new features without affecting the main codebase.</p>
+        <a href="#">Learn more</a>
+      </article>
+
     </main>
     <footer>
       <p>