/**/
td.c5 {
    border-left: 1px solid black
    }
td.c4 {
    border-top: 1px solid black
    }
table.c3 {
    margin-bottom: 3em;
    margin-top: 3em
    }
td.c2 {
    border-top: 2px solid black;
    border-bottom: 3px solid black
    }
td.c1 {
    border-top: 3px solid black;
    border-bottom: 2px solid black
    }
/**/