.riv-sub-menu>.menu-item-has-children>.sub-menu {
    left: 0;
    right: 0;
    margin: 0 auto;
}

.riv-sub-menu>.menu-item-has-children>.sub-menu li {
    position: relative;
    display: table;
    width: 100% !important;
    -webkit-column-break-inside: avoid;
    page-break-inside: avoid;
    break-inside: avoid-column;
    box-sizing: border-box;
    z-index: 10;
}

.riv-sub-menu > .menu-item-has-children > .sub-menu li{
	float: none;
}

.riv-mega-menu-1 > .sub-menu{
    -webkit-column-count: 1;
       -moz-column-count: 1;
            column-count: 1;
}

.riv-mega-menu-2 > .sub-menu{
    -webkit-column-count: 2;
       -moz-column-count: 2;
            column-count: 2;
}

.riv-mega-menu-3 > .sub-menu{
    -webkit-column-count: 3;
       -moz-column-count: 3;
            column-count: 3;
}

.riv-mega-menu-4 > .sub-menu{
    -webkit-column-count: 4;
       -moz-column-count: 4;
            column-count: 4;
}

.riv-mega-menu-5 > .sub-menu{
    -webkit-column-count: 5;
       -moz-column-count: 5;
            column-count: 5;
}
.riv-mega-menu-6 > .sub-menu{
    -webkit-column-count: 6;
       -moz-column-count: 6;
            column-count: 6;
}