body {
    background-color: #121212;
    color: #ffffff;
    font-family: Arial, sans-serif;
}

ul {
    list-style-type: square;
}

.green-box {
    width: 100px;
    height: 100px;
    background-color: green;
    margin-top: 20px;
}

table, th, td {
    border: 1px solid white;
    border-collapse: collapse;
    padding: 5px;
    text-align: left;
}