#myTable {
  margin-top: 10px;
  border-collapse: collapse;
  width: 100%;
  border: 1px solid darkred;
  font-size: 18px;
}

#myTable th, #myTable td {
  text-align: left;
  padding: 12px;
}

#myTable tr {
  border-bottom: 1px solid darkred
}

#myTable tr.header, #myTable tr:hover {
  background-color: #f1f1f1;
}