#contain {
  height: 500px;
  overflow-y: scroll;
}

#table_scroll {
  width: 100%;
  margin-top: 0px;
  margin-bottom: 50px;
  border-collapse: collapse;
}

#table_scroll thead th {
  padding: 10px;
}

#table_scroll tbody td {
  padding: 10px;
}