body {
    font-family: Arial, sans-serif;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

h1 {
    text-align: center;
    color: #333;
}

.search-container {
    margin: 20px 0;
    padding: 15px;
    background-color: #f9f9f9;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.search-container label {
    display: flex;
    gap: 10px;
    align-items: center;
}

.search-container input {
    flex: 1;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.search-container button {
    padding: 8px 16px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

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

.wilayah-container {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

label {
    display: block;
    margin: 15px 0;
}

select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

option {
    padding: 8px;
}

.postal-info {
    margin-top: 20px;
    padding: 15px;
    border-radius: 4px;
    background-color: #f5f5f5;
}

.postal-result {
    background-color: #f5f5f5;
    padding: 15px;
    border-radius: 4px;
    margin: 10px 0;
}

.postal-result.error {
    background-color: #ffebee;
    color: #c62828;
    border: 1px solid #ffcdd2;
}

.postal-result h3 {
    margin: 0 0 10px 0;
    color: #333;
}

.postal-result p {
    margin: 5px 0;
    color: #666;
}