table, th, td {
  border: 1px solid black;
  border-collapse: collapse;
}

thead {
  padding: 15px;
  text-align: center;
  color: white;
  background-color: #777;
}

tr:nth-child(even) {
  background-color: #f2f2f2;
}

td {
  padding: 15px;
  text-align: center;
}
  
table#t01 {
  width: 100%;    
  background-color: #f1f1c1;
}