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

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

#itemList {
    list-style: none;
    padding: 0;
}

#itemList li {
    padding: 12px;
    background-color: #f9f9f9;
    margin-bottom: 8px;
    border-radius: 4px;
    border-left: 4px solid #4CAF50;
}