.wrapper   
/* allow room for 3 columns */
  ul
  {
    width: 35em;
  }
  /* float & allow room for the widest item */
  ul li
  {
    float: left;
  }
  /* stop the float */
  br
  {
    clear: left;
  }
  /* separate the list from subsequent markup */
  div.wrapper
  {
    margin-bottom: 1em;
  }