input {
            background-color: #eef;
            padding: 0.5em;
            border: .5em solid white;
            font-size: 120%;
        }

        table {

            border-collapse: collapse;
            border: 0.1em solid gray;
            margin: 1em;

        }

        tr.naviMenu {
            background-color: white;
        }

        tr.naviMenu td {
            text-align: middle;
            vertical-align: middle;
            padding-top: 4em;
        }

        table tbody tr td {
            padding: 1em;
            border: 0.1em solid gray;
        }

        td {
            vertical-align: top;
        }

        td.input {
            border-top: 0.1em solid gray;
            border-right: 0.1em dotted gray;
            padding: 1em;
        }

        td.output {
            border-top: 0.1em solid gray;
            padding: 1em;
        }

         td.input pre { padding: 0.5em;}