<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Revenue Calculator</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            margin: 20px;
        }
        label {
            margin-top: 10px;
            display: block;
        }
        input, button {
            margin-top: 5px;
            padding: 10px;
            width: 200px;
        }
    </style>
</head>
<body>
<h1>Calculate Your Potential Revenue</h1>
<form id="revenueCalculator">
    <label for="postcode">Enter Postcode:</label>
    <input type="text" id="postcode" required>
    <label for="rooms">Number of Rooms:</label>
    <input type="number" id="rooms" min="1" required>
    <button type="submit">Get Estimate</button>
</form>
</body>
</html>