h1 {
            text-align: center;
        }

        h2 {
            margin-top: 20px;
            margin-bottom: 10px;
        }

        h3 {
            margin-top: 15px;
            margin-bottom: 5px;
        }

        table {
            border-collapse: collapse;
            width: 100%;
        }

        table th,
        table td {
            border: 1px solid black;
            padding: 8px;
            text-align: center;
        }