ds-site/Resources/Private/Sass/layout/_content.scss

body > main {
    @extend .row;

    & > section {
        @extend .col-xl-8;
        @extend .col-12;
    }

    & > aside {
        @extend .col-xl-4;
        @extend .col-12;
        @extend .order-xl-2;
    }
}

aside nav {
    ul {
        list-style: none;
        padding-left: 0;
    }
}

li {
    padding: {
        bottom: $spacer / 2;
        top: $spacer / 2;
    }
}