* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 10px;
}

.container {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

h1 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
}

form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

label {
    font-size: 16px;
    color: #555;
    text-align: left;
}

input {
    padding: 10px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 4px;
    width: 100%;
}

input:read-only {
    background-color: #e9ecef;
    cursor: not-allowed;
}

button {
    padding: 12px;
    font-size: 16px;
    background-color: #5865F2;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #4752C4;
}

@media (max-width: 600px) {
    .container {
        padding: 15px;
    }

    h1 {
        font-size: 20px;
    }

    input, button {
        font-size: 14px;
        padding: 8px;
    }
}