.table-wrapper {
  width: 100%;
  height: 400px; /* Altura de ejemplo */
  overflow: auto;
}

.table-wrapper table {
  border-collapse: separate;
  border-spacing: 0;
}

.table-wrapper table thead {
  position: -webkit-sticky; /* Safari... */
  position: sticky;
  top: 0;
  left: 0;
}

.table-wrapper table thead th,
.table-wrapper table tbody td {
  background-color: #fff;
}