index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="style.css">
    <title>Submit Details Form</title>
</head>
<body>
    <div class="card">
        <h2>Submit Details</h2>
        <h3>Enter Correct Information</h3>
        <form action="data.php" class="detail-form" method="post" >
          <input type="text" placeholder="Name" name="name" required />
          <input type="tel" placeholder="Phone Number" name="pnumber" pattern="^\d{10}" required oninvalid="this.setCustomValidity('Please enter a 10-digit phone number (e.g.8677189191)')" required/>
          <input type="text" placeholder="City" name="city" required />
          <button type="submit">Submit</button>
        </form>
      </div>
</body>
</html>

