body {
     color: black;
     margin: 0;
     text-align: center;
     font-family: verdana, sans-serif;
     font-size: 20px;
 }

 table {
  width:800px;
  margin-left:auto;
  margin-right:auto;
 }

 table, tr, th  {
   border:30px solid blue;
 }