Cross browser multi-column snippet

Cross browser multi-column
-moz-column-count: 2;
-moz-column-gap: 1em;
-webkit-column-count: 2;
-webkit-column-gap: 1em;
-khtml-column-count: 2;
-khtml-column-gap: 1em;
column-count: 2;
column-gap: 1em;

-moz-column-count: 2;
-moz-column-gap: 1em;
-webkit-column-count: 2;
-webkit-column-gap: 1em;
-khtml-column-count: 2;
-khtml-column-gap: 1em;
column-count: 2;
column-gap: 1em;