Multi-column drop down menu in Debut theme

Store Design
86

Try to use this:

  1. Go to Online Store->Theme->Edit code
  2. Asset->theme.scss->paste bellow code in bottom of file
@media only screen and (min-width: 767px) {
         .header-item--split-left .site-navigation:first-child > .site-nav__item:first-child .grid__item{column-count: 4;    width: 40%;}
    }