td {
background: #bfb;
border-top: 1px solid #0f0;
border-left: 1px solid #0f0;
border-right: 1px solid #090;
border-bottom: 1px solid #090;
}
th {
color: #fff;
background: #080;
border-top: 1px solid #6c6;
border-left: 1px solid #6c6;
border-right: 1px solid #050;
border-bottom: 1px solid #050;
  vertical-align: top;
}
table {margin-left:auto; margin-right:auto;}