<style>
  tr:nth-child(odd) {
    background-color: #f2f2f2;
  }
  tr:nth-child(even) {
    background-color: #ffffff;
  }
th[data-sort] {
  cursor: pointer;
  position: relative;
}

.sort-arrow {
  margin-left: 5px;
  font-size: 0.8em;
}
</style>