body {
    font-family: Arial, sans-serif;
    max-width: 600px;
    margin: 50px auto;
    padding: 20px;
    background-color: #f5f5f5;
}

div {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h2 {
    color: #333;
    margin-bottom: 20px;
    text-align: center;
}

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

li {
    display: flex;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #eee;
    font-size: 16px;
}

li:last-child {
    border-bottom: none;
}

input[type="checkbox"] {
    margin-right: 15px;
    transform: scale(1.2);
    cursor: pointer;
}

input[type="checkbox"]:checked + span {
    text-decoration: line-through;
    color: #888;
}

/* Add some spacing for the text content */
li span {
    flex: 1;
}