td, th {
  border: 1px solid grey;
  white-space: nowrap;
  height: 40px;      /* ADDED by Me */
}
div {
  width: 800px;
  overflow-x: scroll;
  margin-left: 7em;
}
.headcol {
  position: absolute;
  /* elements, 2em means 2 times the size of the current font */
  width: 7em;		/* 7 elements from the left that is 0 */
  left: 0;			/* very  left, because it is zero, no margin */
}