diff --git a/index.html b/index.html
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index 00000000..af72198c
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+++ b/index.html
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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+<!--    <script type="module" src="js/scripts.js"></script>-->
+    <script type="module" src="js/numbers_operators.js"></script>
+</head>
+<body>
+    <button id="button_A">Start machine</button>
+    <p>The machine is stopped.</p>
+    <h3 id="heading_A"></h3>
+
+    <!-- STRINGS -->
+    <h2>Strings</h2>
+    <button class="string">Press me</button>
+    <div id="greeting"></div>
+    <!--  filtering message  -->
+    <h4>Christmas Messages</h4>
+    <div class="output">
+        <ul></ul>
+    </div>
+
+
+</body>
+</html>
