/**/
span.c4 {
    margin-left: 3.5em
    }
table.c3 {
    border: 2px solid black;
    padding: 1em;
    margin: 2em auto 3em
    }
td.c2 {
    font-style: italic
    }
table.c1 {
    border: 2px black solid;
    margin: auto auto;
    max-width: 50%;
    padding: 1%
    }
/**/