body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 20px;
}

.container {
	display: flex;
    flex-direction: column;
    justify-content: center; /* Pusatkan secara vertikal */
    align-items: center; /* Pusatkan secara horizontal */
    max-width: 600px;
    margin: auto;
    background: white;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    text-align: center;
}

button {
    display: block;
    margin: 20px auto;
    padding: 10px 20px;
    font-size: 16px;
}

ul {
    list-style-type: none;
    padding: 0;
}

li {
    background: #e2e2e2;
    margin: 10px 0;
    padding: 10px;
    border-radius: 4px;
}