.mytable {
  border-collapse: collapse;
}

.mytable th {
  height: 50px;
  text-align: center;
  background-color: #ffffff;
}

.mytable th, .mytable td {
  padding: 15px;
}

.mytable tr:hover {background-color: #f5f5f5;}

.mytable tr:nth-child(even) {background-color: #ffffff;}