index.html

<!DOCTYPE html>
<html>
<head>
  <title>PRACTIC WEB DEV</title>
  <link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
  <marquee>Мой тг:@faruhyuss</marquee>

  <div class="calculator">
    <input type="text" id="result" disabled>
    <div class="buttons">
      <button onclick="clearResult()">C</button>
      <button onclick="deleteLast()">DEL</button>
      <button onclick="appendToResult('/')">÷</button>
      <button onclick="appendToResult('7')">7</button>
      <button onclick="appendToResult('8')">8</button>
      <button onclick="appendToResult('9')">9</button>
      <button onclick="appendToResult('*')">x</button>
      <button onclick="appendToResult('4')">4</button>
      <button onclick="appendToResult('5')">5</button>
      <button onclick="appendToResult('6')">6</button>
      <button onclick="appendToResult('-')">-</button>
      <button onclick="appendToResult('1')">1</button>
      <button onclick="appendToResult('2')">2</button>
      <button onclick="appendToResult('3')">3</button>
      <button onclick="appendToResult('+')">+</button>
      <button onclick="appendToResult('0')">0</button>
      <button onclick="appendToResult('.')">.</button>
      <button onclick="calculateResult()">=</button>
    </div>
  </div>

  <script src="script.js"></script>
</body>
</html>