<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Random Color Generator</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            background-color: #f0f2f5;
        }
        .container {
            text-align: center;
        }
        .color-box {
            width: 200px;
            height: 200px;
            margin: 20px auto;
            background-color: #ffffff;
            border: 1px solid #ddd;
            border-radius: 8px;
        }
        button {
            padding: 10px 20px;
            border: none;
            border-radius: 5px;
            background-color: #007bff;
            color: white;
            font-size: 1em;
            cursor: pointer;
        }
        button:hover {
            background-color: #0056b3;
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>Random Color Generator</h1>
        <div class="color-box" id="colorBox"></div>
        <button onclick="generateColor()">Generate Color</button>
    </div>

    <script>
        function generateColor() {
            const colorBox = document.getElementById('colorBox');
            const randomColor = '#' + Math.floor(Math.random()*16777215).toString(16);
            colorBox.style.backgroundColor = randomColor;
        }
    </script>
</body>
</html>