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diff --git a/image2.png b/image2.png
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diff --git a/index.html b/index.html
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+<!DOCTYPE html>
+<html lang="ru">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Калькулятор - Лабораторная работа 4</title>
+    <link rel="stylesheet" href="calc-style.css">
+    <link href="https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;700&display=swap" rel="stylesheet">
+</head>
+<body>
+    <div class="calc-container">
+        <h1>Калькулятор</h1>
+        <p>Простой и надёжный инструмент для вычислений</p>
+
+        <div class="calc-form">
+            <input type="number" id="num1" placeholder="Первое число" step="any" required>
+            
+            <select id="operation">
+                <option value="+" selected>+ Сложение</option>
+                <option value="-">- Вычитание</option>
+                <option value="*">× Умножение</option>
+                <option value="/">÷ Деление</option>
+            </select>
+            
+            <input type="number" id="num2" placeholder="Второе число" step="any" required>
+            
+            <button id="calculate">Вычислить</button>
+        </div>
+
+        <div class="result" id="result">
+            Результат появится здесь
+        </div>
+
+        <a href="index.html" class="back-link">← Вернуться к резюме</a>
+    </div>
+
+    <script>
+        const num1Input = document.getElementById('num1');
+        const num2Input = document.getElementById('num2');
+        const operationSelect = document.getElementById('operation');
+        const calculateBtn = document.getElementById('calculate');
+        const resultDiv = document.getElementById('result');
+
+        calculateBtn.addEventListener('click', () => {
+            const num1 = parseFloat(num1Input.value);
+            const num2 = parseFloat(num2Input.value);
+            const operation = operationSelect.value;
+
+            resultDiv.className = 'result';
+
+            if (isNaN(num1) || isNaN(num2)) {
+                resultDiv.textContent = 'Ошибка: введите корректные числа в оба поля';
+                resultDiv.classList.add('error');
+                return;
+            }
+
+            let result;
+            switch (operation) {
+                case '+':
+                    result = num1 + num2;
+                    break;
+                case '-':
+                    result = num1 - num2;
+                    break;
+                case '*':
+                    result = num1 * num2;
+                    break;
+                case '/':
+                    if (num2 === 0) {
+                        resultDiv.textContent = 'Ошибка: деление на ноль невозможно';
+                        resultDiv.classList.add('error');
+                        return;
+                    }
+                    result = num1 / num2;
+                    break;
+            }
+
+            resultDiv.textContent = `Результат: ${result}`;
+            resultDiv.classList.add('success');
+        });
+    </script>
+</body>
+</html>
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diff --git a/style.css b/style.css
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--- /dev/null
+++ b/style.css
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+body {
+    font-family: Arial, Helvetica, sans-serif;
+    background-color: #f4f4f4;
+    padding: 20px;
+    line-height: 1.6;
+}
+
+.header {
+    text-align: center;
+    margin-bottom: 40px;
+}
+
+.header h1 {
+    margin-bottom: 10px;
+    color: #333;
+}
+
+.header p {
+    font-size: 1.4em;
+    font-weight: bold;
+    color: #222;
+    margin: 8px 0;
+}
+
+h2 {
+    text-align: center;
+    color: #444;
+    padding: 20px 0 50px;
+}
+
+.text-container {
+    max-width: 800px;
+    margin: 40px auto;
+    padding: 30px;
+    background-color: #6F4700;
+    color: #3D5D93;
+    text-align: left;
+    border-radius: 10px;
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
+}
+
+.image-overlay {
+    position: relative;
+    width: 300px;
+    height: 400px;
+    margin: 50px auto;
+    border: 3px solid #333;
+}
+
+.image-overlay__img {
+    position: absolute;
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+    width: 250px;
+    height: auto;
+}
+
+.image-overlay__img--front {
+    z-index: 10;
+}
+
+.traffic-light {
+    width: 120px;
+    height: 300px;
+    background-color: #222;
+    margin: 60px auto;
+    padding: 15px;
+    border-radius: 20px;
+    display: flex;
+    flex-direction: column;
+    justify-content: space-between;
+    align-items: center;
+}
+
+.traffic-light__light {
+    width: 90px;
+    height: 90px;
+    border-radius: 50%;
+}
+
+.traffic-light__light--red { background-color: #c0392b; }
+.traffic-light__light--yellow { background-color: #f1c40f; }
+.traffic-light__light--green { background-color: #27ae60; }
+
+.maze {
+    display: grid;
+    grid-template-columns: repeat(3, 120px);
+    grid-template-rows: repeat(3, 120px);
+    gap: 0;
+    margin: 60px auto;
+    width: fit-content;
+    background-color: #ffffff;
+    padding: 15px;
+    border: 5px solid #000;
+    border-radius: 10px;
+    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
+}
+
+.maze__cell {
+    box-sizing: border-box;
+    background-color: #f8f8f8;
+}
+
+.maze__cell--wall-top { border-top: 5px solid #000; }
+.maze__cell--wall-right { border-right: 5px solid #000; }
+.maze__cell--wall-bottom { border-bottom: 5px solid #000; }
+.maze__cell--wall-left { border-left: 5px solid #000; }
+
+.maze__cell--start,
+.maze__cell--end {
+    background-color: #d0f0d0;
+}
+    background-color: #dff0d8;
+
+}
diff --git a/styles.css b/styles.css
new file mode 100644
index 00000000..32632dcf
--- /dev/null
+++ b/styles.css
@@ -0,0 +1,102 @@
+* {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+}
+
+body {
+    font-family: 'Roboto', sans-serif;
+    background-color: #f5f5f5;
+    color: #333;
+}
+
+.calc-container {
+    max-width: 500px;
+    margin: 60px auto;
+    padding: 40px;
+    background-color: #fff;
+    border-radius: 15px;
+    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
+    text-align: center;
+}
+
+.calc-container h1 {
+    font-size: 32px;
+    margin-bottom: 10px;
+    color: #2c3e50;
+}
+
+.calc-container p {
+    color: #7f8c8d;
+    margin-bottom: 40px;
+}
+
+.calc-form {
+    display: flex;
+    flex-direction: column;
+    gap: 20px;
+    margin-bottom: 30px;
+}
+
+.calc-form input, .calc-form select {
+    padding: 15px;
+    font-size: 18px;
+    border: 2px solid #ddd;
+    border-radius: 8px;
+    transition: border 0.3s;
+}
+
+.calc-form input:focus, .calc-form select:focus {
+    outline: none;
+    border-color: #3498db;
+}
+
+#calculate {
+    padding: 15px;
+    font-size: 20px;
+    background-color: #3498db;
+    color: white;
+    border: none;
+    border-radius: 8px;
+    cursor: pointer;
+    transition: background 0.3s;
+}
+
+#calculate:hover {
+    background-color: #2980b9;
+}
+
+.result {
+    padding: 20px;
+    font-size: 24px;
+    border-radius: 8px;
+    background-color: #ecf0f1;
+    min-height: 70px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.result.success {
+    background-color: #d4edda;
+    color: #155724;
+    border: 1px solid #c3e6cb;
+}
+
+.result.error {
+    background-color: #f8d7da;
+    color: #721c24;
+    border: 1px solid #f5c6cb;
+}
+
+.back-link {
+    display: inline-block;
+    margin-top: 40px;
+    color: #3498db;
+    text-decoration: none;
+    font-size: 18px;
+}
+
+.back-link:hover {
+    text-decoration: underline;
+}
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