How to position mega menu from start of nav? about smartmenus HOT 2 CLOSED

  /*.sm-clean > li > ul:before,
  .sm-clean > li > ul:after {*/
  .sm-clean > li > a.highlighted:before,
  .sm-clean > li > a.highlighted:after {
    content: '';
    position: absolute;
    top: 23px;
    left: 30px;
    width: 0;
    height: 0;
    overflow: hidden;
    border-width: 9px;
    border-style: dashed dashed solid dashed;
    border-color: transparent transparent #b40500 transparent;
    z-index: 24;
  }
  /*.sm-clean > li > ul:after {*/
  .sm-clean > li > a.highlighted:after {
    top: 27px;
    left: 31px;
    border-width: 8px;
    border-color: transparent transparent #050505 transparent;
    z-index: 24;
  }