.promo-container {
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    border-radius: 8px;
    
}

.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
}

input[type="text"] {
    width: 100%;
    background: #620098;
    color: #ffffff;
    padding: 8px;
    border-radius: 4px;
}

button {
    background-color: #007bff;
    color: white;
    padding: 10px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.success {
    color: green;
    margin-top: 10px;
}

.error {
    color: red;
    margin-top: 10px;
}