body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    max-width: 400px;
    width: 100%;
    padding: 20px;
}

.screen {
    background-color: #fff;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

h2 {
    text-align: center;
    color: #333;
}

form {
    display: flex;
    flex-direction: column;
}

label {
    margin-top: 10px;
    color: #555;
}

input {
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
}

input[type="tel"] {
    pattern="[0-9]*";
}

input[type="text"] {
    pattern="[A-Za-z]+";
}

input[type="password"] {
    pattern=".{8,}";
}

button {
    margin-top: 20px;
    padding: 10px;
    background-color: #00aaff;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background-color: #0088cc;
}

a {
    color: #00aaff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.forgot {
    text-align: center;
    margin-top: 5px;
}

p {
    text-align: center;
    color: #555;
    margin-top: 10px;
}

@media (max-width: 480px) {
    .container { padding: 10px; }
    .screen { margin-bottom: 10px; }
}