body {
  background-color: #b0b0b0;
  padding-left: 20px;
}

table {
  border-collapse: collapse;
}

th, td {
  border: 1px solid black;
  padding: 5px;
  text-align: center;
}

th {
  background-color: #c8c8c8;
}

td {
  background-color: #e0e0e0;
}