body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    width: 80%;
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: #f9f9f9;
}

h1 {
    color: #333;
    text-align: center;
    margin-bottom: 20px;
}

h2 {
    color: #333;
    text-align: center;
    margin-bottom: 20px;
}

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

label {
    margin-bottom: 8px;
}

input[type="text"] {
    padding: 10px;
    margin-bottom: 20px;
    border-radius: 4px;
    border: 1px solid #ccc;
}

input[type="submit"] {
    padding: 12px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

input[type="submit"]:hover {
    background-color: #0056b3;
}

.message {
    display: none;
    text-align: center;
    margin-top: 20px;
    color: #007bff;
}

.waiting-message {
    display: block;
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    padding: 10px;
    border-radius: 5px;
}

.green {
    color: green;
}

.red {
    color: red;
}