.mytable {
  margin: 1cm;
  padding: 50px;
  border: 1px solid black;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
  border-collapse: collapse;
  border-spacing: 10px;
}

tr.mytable:nth-child(even){background-color: #f2f2f2}
tr.mytable:hover {background-color: #f5f5f5}

th.mytable {
    background-color: #00AF50;
}