added feedback button and toggle feedback form functionality

public/index.html

@@ -78,15 +78,20 @@
           <div>
             <button onclick="calculateReadingTime()">Calculate</button>
           </div>
-          <div>
-            <div id="calculate-time-element" class="title" style="display: none;">
+          <div id="calculate-time-element" style="display: none;">
+            <div class="title">
               <h2>Estimated Reading Time: 5 min</h2>
             </div>
+            <div>
+              Send your feedback on: ybehira@yahoo.com
+              <button onclick="showFeedbackForm()">Feedback</button>
             </div>
           </div>
-        <div>
+          
+        </div>
+        <div id="feedback-form" style="display: none;">
           <div class="title" style="padding-bottom: 12px; border-bottom: 1px solid #dddddd; margin-bottom: 10px;">
-            <h3>Please provide feedback</h3>
+            <h3>Feedback Form</h3>
           </div>
           <div>
             <form action="mailto:ratnadeepkharade@gmail.com" method="GET" target="_blank">
@@ -159,6 +164,11 @@
         x.style.display = "block";
       }
 
+      function showFeedbackForm() {
+        let x = document.getElementById('feedback-form');
+        x.style.display = "block";
+      }
+
     </script>
 
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