diff --git a/index.html b/index.html
index 9a09571..42d7210 100644
--- a/index.html
+++ b/index.html
@@ -226,9 +226,10 @@ <h1>Forms</h1>
           <div>
             <label>Radio Buttons</label>
             <ul>
-              <li><label><input type="radio" /> Label 1</label></li>
-              <li><label><input type="radio" /> Label 2</label></li>
-              <li><label><input type="radio" /> Label 3</label></li>
+              <!-- All radio buttons have the same name attribute to ensure they are part of the same group -->
+              <li><label><input type="radio" name="group1" /> Label 1</label></li>
+              <li><label><input type="radio" name="group1" /> Label 2</label></li>
+              <li><label><input type="radio" name="group1" /> Label 3</label></li>
             </ul>
           </div>