body { margin: 1em 10%;}
   table { margin-left: auto; margin-right: auto; text-align: center; }
   th { padding: 0.25em 1.5em 0.25em 1.5em; text-align: center; }
   td { padding: 0.25em 1.5em 0.25em 1.5em; text-align: center; }