body {
    font-family: Arial, sans-serif;
}
.viivat td {
  border: 1px solid #000;
  padding: 4px 8px;
}
table  {
    border-collapse: collapse;

}
th {
    text-align: left;
}
.raidat tr:nth-child(even) {
    background-color: rgb(174, 241, 220);
}
.raidat th, .raidat td {
    padding: 4px 8px;
}