body {
    font-family: 'Courier New', monospace;
    background: #f7f7f7;
    color: #222;
    margin: 0;
    padding: 0;
}

header, footer {
    text-align: center;
    padding: 1em;
    background: #fff;
    border-bottom: 1px solid #ccc;
}

table {
    width: 90%;
    margin: 2em auto;
    border-collapse: collapse;
    background: #fff;
    box-shadow: 0 0 5px rgba(0,0,0,0.1);
}

th, td {
    padding: 0.75em;
    border: 1px solid #ccc;
    text-align: right;
}

th:first-child, td:first-child {
    text-align: center;
}

.positive {
    color: green;
    font-weight: bold;
}

.negative {
    color: red;
    font-weight: bold;
}

.winner {
    text-align: center;
    margin: 2em 0;
}