/**/
table.c3 {
    padding: 2%;
    border: 3px dotted gray
    }
table.c2 {
    margin: auto;
    max-width: 60%
    }
table.c1 {
    border: 2px black solid;
    margin: auto auto;
    max-width: 50%;
    padding: 1%
    }
/**/