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

body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #f4f4f4;
    padding: 20px;
}

.form-container {
    background-color: #ffffff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0px 4px 12px rgba(0, 0, 0, 0.1);
    max-width: 400px;
    width: 100%;
    text-align: center;
}

.header-image {
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: 8px 8px 0 0;
    margin-bottom: 20px;
}

h1 {
    color: #333;
    margin-bottom: 10px;
}

p {
    color: #555;
    margin-bottom: 20px;
    font-size: 0.9em;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #555;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

button {
    width: 100%;
    padding: 12px;
    background-color: #4CAF50;
    color: #ffffff;
    border: none;
    border-radius: 5px;
    font-size: 18px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #45a049;
}

.success-message {
    margin-top: 20px;
    color: #4CAF50;
    font-weight: bold;
}

/* Responsive design */
@media (max-width: 600px) {
    .form-container {
        padding: 15px;
    }

    h1 {
        font-size: 1.5em;
    }

    p {
        font-size: 0.8em;
    }
}

.limited-offer {
    margin-top: 10px;
    font-size: 0.85em;
    color: #ff0000; /* Warna merah untuk menarik perhatian */
    text-align: left;
}