body{
  text-align:center;
  padding:30px;
}

table{
  margin:auto;
  border:3px solid red;
  border-collapse: collapse;
}

td, th{
  border:3px solid red;
  padding:15px;
}

tr:nth-of-type(even) td{
  background-color:tomato;
}

th{
  background-color:steelblue; 
}