diff --git a/popup.html b/popup.html
index 0519fba..636bd1a 100644
--- a/popup.html
+++ b/popup.html
@@ -5,21 +5,18 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Binaural Beats Generator</title>
     <style>
-        body {
-            width: 200px;
-            font-family: Arial, sans-serif;
-        }
+        /* Add your CSS styling here */
     </style>
 </head>
 <body>
-    <label for="frequencySlider">Frequency:</label>
-    <input type="range" id="frequencySlider" min="0" max="1000" value="10">
-    <span id="frequencyDisplay">Frequency: 10 Hz</span>
-    <br><br>
+    <label for="deltaSlider">Delta (Hz Difference):</label>
+    <input type="range" id="deltaSlider" min="1" max="30" value="10">
+    <span id="deltaDisplay">Delta: 10 Hz</span>
+    <br>
     <label for="volumeSlider">Volume:</label>
     <input type="range" id="volumeSlider" min="0" max="1" step="0.01" value="0.5">
     <span id="volumeDisplay">Volume: 50%</span>
-    <br><br>
+    <br>
     <button id="togglePlayPause">Play</button>
     <script src="popup.js"></script>
 </body>
