css grid reverse column order

/* Keyword values */
grid-auto-flow: row;
grid-auto-flow: column;
grid-auto-flow: dense;
grid-auto-flow: row dense;
grid-auto-flow: column dense;

/* Global values */
grid-auto-flow: inherit;
grid-auto-flow: initial;
grid-auto-flow: revert;
grid-auto-flow: unset;

#container {
  display: grid;
  grid-template-columns: 240px 1fr;
  grid-auto-flow: dense; /* NEW */
}